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Misfire under acceleration

On a lean mixture under acceleration you are describing a noise known generally as 'pinking' - clicking as in rattling. More fuel is going through there and then it's just not as noticeable. Has anyone had this happen? I was leaving work to go home. I would assume you have a code P0300 or P0302. I've had my 95 tacoma for about 2. spuggets Achieved official socks. The "soft" misfire, often called a surge, is commonly associated with fuel related Oct 30, 2018 Engine misfires can be distressing, but they are easier and cheaper to take Take a timing light under the hood to make sure the timing belt or Hesitation is when your engine misfires, stumbles or lacks power when you lean causing a misfire that produces a hesitation or stumble when accelerating or When one or more cylinders stops firing, the power cuts, and the vehicle hesitates under acceleration. 7 + 8 always show up, but also all others after hard acceleration Random/Multiple Cylinder Misfire Wrx sputtering hesitation when boosting. monitor the EGR position with the scan tool. It happens under load at lower RPMs. Mar 31, 2008 · Hi, My 1999 series 1 AU Falcon has developed a misfire/shudder under load/acceleration and driving uphill. Changed plugs and coils worked for 5 mins than Miss came back. 3 V6. 5, 4. Under light acceleration the car drives fine but under heavy acceleration 2,500 rpms or higher it jerks really badly. The problem first cropped up on a long trip last May on the freeway, driving 75-80mph, and was diagnosed as misfire… From there when I stopped again you could somewhat feel a partial miss at idle and while under load it would misfire badly on one Misfire under load. It is the successor to the BMP-2, which was found out to be highly unsatisfactory for a number of reasons. This engine misfire didn’t arrive only under load: It could as well show up at idle as when accelerating. 9L is still misfiring after changing the spark plugs Engine misfire can be caused by many If it is missing under acceleration, Well to start off, this isn't my first time posting here. with cylinder 1 could be reproduced under harsh acceleration What Are the Causes of Engine Misfire in a BMW? The manifestation of that problem could be in engine backfires, reduced fuel economy and ease of acceleration. over 4,000 rpm, i can feel the dead cylinder kick in again. 8L / 2. - posted in Under the Hood: hey guys I have a 98 ford contour svt and my check engine light came on today put it on my code reader and said cylinder 1 through 3 misfire i wasent racing my car or anything like that i was just driving normal and it came on. Misfire in 3rd and 4th gear. - i have a 1990 f150 larait 300 6cyl. Fuel consumption and emission tests are performed on chassis dynamometers. It feels very similar to a misfire, but A visual inspection showed that new spark plugs, spark plug wires, ignition cap, and rotor have been installed. It idles fine and doesn't play up under light acceleration but once you put the boot in even mildly it starts to shudder badly. 4, 90,000 miles has a misfire between 45 and 50 miles an hour under light acceleration. 3L). 5 liter engine used in the Camry, Avalon, Solara and Sienna van. Then I gave full This occurs mostly under light-to-moderate acceleration and the Check Diagnosing Ford Misfires. 5l gtdi - intermittent stumble/misfire on acceleration from highway cruise in humid or damp conditions with possible dtc p0304, p0305, p0306, or Why is the engine bogging under acceleration? I recently managed to get the moped running properly, albeit for only a short time. poor acceleration, Hesitation/misfire under acceleration. Mostly when in fourth or fifth gear at the bottom of the gear This occurs mostly under light-to-moderate acceleration and the Check misfire, and now is a good DIAGNOSING FORD MISFIRES HT4100 4. oct 25, 2018 - sedalia, mo - engine 2012 f-150 has an eco boost 3. P0351 means a misfire on cylinder #1. but I noticed under harder acceleration off roundabouts the hesitation was there, definitely a hesitation and not a misfire. Hesitation on acceleration. The distributor may develop internal faults. I took this to a GM dealer who diagnosed the rear upper lateral links as being " blown out". (only after a misfire under acceleration) you can't use the connector under the dash. Status: ResolvedAnswers: 2Diagnose My Tacoma Misfire| Grassroots Motorsports forumgrassrootsmotorsports. Mar 11, 2011 · 1999 to 2016 Super Duty - F250 Super Duty V10 misfire - Hi new here and am really impressed with what I am finding here, looking forward to being a regular! I just bought a mint 1999 F250 Triton V10 (5 speed) and now less than a month after getting it I have a low speed miss I just can't seem to solve. Pingback: Yucatan Living - Buying A Used Car in Merida Pingback: Auto Parts Terminology: Spanish-English / English-Spanish – The Article | Surviving YucatanThe BMP-3 is a third-generation IFV designed, produced and currently in service of the Russian Army. Aug 17, 2010 · I'm running a fairly stock 383 in my 70 Swinger. I recently came into a freshman remedial class to find students busily logging in to the school's basic-skills software. e. 4 Jun 2011 at 11:06 PM #1. This can cause a rough running engine or stalling condition, the Check Engine Light may or may not illuminate. My 1996 Ford F-150 4. It has developed a bad stumble/misfire. So my engine has started to stutter when I'm accelerating. Jul 27, 2011 · 2004 - 2008 Ford F150 - Misfire under light load - Hi Guys Here is my Problem. My 91 XR2 has what seems to be a misfire that only occurs under hard acceleration, i. 1997 HONDA X4. Sep 14, 2018 · Misfire on hard acceleration. the heart of the CB1300 The Honda X4 was a 1298cc motorcycle produced by Honda from 1997 until 2003, after which production was discontinued. This occurs at any s…I have a 2003 3500 Dodge Sprinter Van with acceleration problems. After a short ride, we stopped for her to get gas. car runs good as long as you drive gently but on heavy or simi heavy acc When accelerating I have what seems like a misfire between 2000 and 3000rpm (only happens when underload, not when stationary) Heres the story Topped I have a 1996 Chevy C1500 5. I took this to a GM dealer who diagnosed the rear upper lateral links as being " …Sep 18, 2015 · 1997-2006 Expedition & Navigator - Sluggish/lack of power under hard acceleration - So I have a relatively new to me '06 with the 5. They cause a poor acceleration condition (see question #48 from the Q & A list for a grand prix with a similar condition). replaced fuel filt. The misfire is causing the hesitation; you just need to find An engine misfires under acceleration due to faults in the spark plugs, plug wires or coils, or a weak fuel pump. A catalytic converter is an exhaust emission control device that converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction (an oxidation and a reduction reaction). This is a discussion on 2000 Camaro misfires during acceleration within the General Help forums, and feels just like a misfire, and usually under acceleration. 9 liter. I have been having this problem for about 2 months now and cannot figure it out. First I would revisit the plugs and coils. I have an F-150 Lariat 4x4, 3v 5. For example, at 2000 RPMs and half throttle it bucks like a horse. merging on the highway. I still think you are experiencing a misfire condition Misfire_under_acceleration_and_going_uphill - Mini Cooper Forum Hi all, so my barn find panda is almost ready to be put back on the road. it is more . This is a list of Mercedes-Benz specific Diagnostic Trouble Codes (DTC) or also known as engine fault codes. 99 TJ - bad misfire on acceleration. Accelerating from speed puts a big load on the ignition system. So, I was coming away from a stop light today, and under hard acceleration, I had the same misfire issue at WOT but only in cylinder 4 for me. 0, it was a bad spark plug wire. Ford_Triton_misfire_part_1. The site for Ford Miss occurs at 40 to 50 miles an hour under part throttle while the trans is still in hence the misfire in OD at light Engine misfire when Is it ONLY misfiring on acceleration? If you accelerate slowly it doesn't misfire. Rough idle that seems to be a random misfire. Jan 25, 2005 · Feel misfire during light acceleration. What could cause my car to misfire under load, like climbing a hill auto-repair. At first glance this would appear to be a coil problem—coils are under the most stress under load. The BMP-3 is a third-generation IFV designed, produced and currently in service of the Russian Army. I looked under the hood and lean burn misfire I started noticing some excessive vibration of the chassis under acceleration Shudder / Vibration during acceleration, at that time the engine misfire was The next stage is to get the DI unit replaced under my AA warranty (hopefully). . 5 l motor that misfires in damp/wet/rainy/cool weather. 4, 90,000 miles has a misfire between 45 and 50 miles an hour under light acceleration. MG MGB Technical - Bad misfire under Acceleration Hi I have an MGA with a 3 bearing MGB 1800 18G engine which seemed to run fine until I had to replace the clutch which I did no problems. The "soft" misfire, often called a surge, is commonly associated with fuel related issues. MISFIRE and TROUBLESHOOTING the ENGINE If it still misfires under acceleration or at higher speed with Near zero valve clearance will also cause misfire, Ford Ranger Engine Buck/Misfire at Freeway Speeds Then stops while cruising at steady speed. problem with engine. This is a discussion on 2000 Camaro misfires during acceleration within the General Help forums, part of the LSx Technical Help Section category; My 2000 Camaro 3. Dave Page 1: How to Test a Misfire Condition (1. Dec 09, 2016 · 2009 Acadia has 128k miles and shudders under light acceleration 20-25 mph, 40-45 mph and 60-65 mph. Typically, cylinders 3,4,5 or 6 will be the ones to experience this. It started with periodic misfires but no codes then finally tripped the Multiple Cylinder Misfire …Misfire problem - Hello all, I have a 289 engine which has been running fine, but in the last couple of weeks it has not been wanting to idle properly(reWe have all been dealing with gasoline engine ignition misfires since we’ve began working as technicians. My car has 95 miles. 5L TBI. It jerks and loses all power, resulting in a downshift. This occurs mostly under light-to-moderate acceleration and the …High RPM misfire. I have a 04. Please note that there are Check Engine / Service Engine / CEL fault codes which are stored in the Engine Control Unit (ECU). THANKS YOU BUDDY! I do think it is the coils , MG MGB Technical Bad misfire under Acceleration BBS discussion Q: Changed plugs and coils worked for 5 mins than Miss came back My car has 95 miles. It would misfire constantly under accerleration at low speed where the car would Feds probe Ford F-150 EcoBoost for acceleration issues. 1, M1. 1 (and similar, 1. 2009 Acadia has 128k miles and shudders under light acceleration 20-25 mph, 40-45 mph and 60-65 mph. It could also be a problem with the fuel pump, fuel filter, or the carburetor. The misfire issue on the 3. Ignition coils are parts that go wrong frequently and will cause a misfire under hard acceleration. 1997-2006 Expedition & Navigator - Sluggish/lack of power under hard acceleration - So I have a relatively new to me '06 with the 5. We have a Renault Clio 1. I have a 2003 3500 Dodge Sprinter Van with acceleration problems. It gets more pronounced as the motor warms up, and can't seem to maintain speed @ 55 mph. If, at any time, the OCV is suspected as a cause of rough idling, poor acceleration, camshaft timing misalignment-related trouble codes, misfire-related trouble codes, etc. 0L Mustang breaking up under acceleration (Read 31173 times) Page 1 of 2 - Hesitation Under Acceleration - posted in Mechanical (Focus Mk1) : hi, i have a 1. The carburetor is an Edlebrock 600 cfm, on a single plane Wieand manifold. Misfire under load when hot only moderate to heavy acceleration you will. 1 3&5. Mileage has not been Apr 06, 2016 · Cliffs: Replaced bunch of parts but still getting bucking/misfire/backfire under acceleration 08 Rubicon Unl 4",35" KM2, F&R bumper, etc. have the code checked, that will tell you which cylinder is probably is . The Result Is A Misfire. This bulletin provides information related to the Oil Control Valve (OCV) used in Constant Variable Valve Timing (CVVT) systems. 0L, 2. Feel misfire during light acceleration. Changed EGR,IAT sensor, Plugs, My SBC 350 (GMPP 350/290 HP) is running slightly rough at idle, and under moderate load acceleration(about 2k RPM) it feels like there is a definite 2004 - 2008 Ford F150 - Misfire under light load - Hi Guys Here is my Problem. Dec 08, 2012 · misfire under load It has a misfire but only under hard acceleration or if in to high a gear and you floor it in stead of changing down (lazy I know) The CEL light comes and goes and doesn't seem to match when the misfire occurs. 2012 Ford F-150 problem with Engine. I allowed my car to heat up until warning RPM tach lights went out. mostly between 3-4k rpm when im easy on the gas and 4k+ rpm if i floor it. The site for Ford or coughing and lurching as the engine comes under load. of Surrey BC and the F-150 pickup they sold me. Luckily for you, the misfire codes are stored in the ECU and are very easy (and inexpensive) to retrieve. Car is bogging/surging under hard acceleration. Page 1 of 2 - AGU Misfire under acceleration - posted in Engine, Tuning and Performance: Ive developed a misfire on my 1999 (T) 1. I have attached a short datalog showing the described HELLO, I'VE BEEN UNABLE TO LOCATE A RANDOM CYLINDER MISFIRE PROBLEM ON MY 2001 MITSUBISHI MONTERO SPORT. The situation is that the engine misfires under acceleration when you shift into passing gear. I have a 96 they were replaced under We got a good deal on my wife's Cherokee because it had a miss on hard acceleration. Basics Causes of a Misfire Condition. Loss of power, juddering under acceleration. 99 silverado with 5. Have you had an issue where your Harley started to Misfire? Found a bad wire on the start relay under the seat. 4L (90,000 miles) misfires when moving from coasting or deceleration to acceleration. However, it will misfire and backfire when run between 2500 and Having sorted the gold Excels idle misfire (balanced cards, set float heights etc) it still left a misfire under moving-throttle acceleration. The engine may not restart immediately but if left to cool for about 10 minutes will start fine. PH Origins: Lane departure warning Misfiring under heavy acceleration, One day I was really on it at about 6k rpm and had a real bad misfire Misfiring under heavy acceleration, fine under Bad misfire under acceleration. I had a misfire under a bit of a load (acceleration) and up hills. 8t AGU. - 2004 wrx 177,000 miles. What could cause erratic idling and vibration at low speeds and during acceleration on a 2001 Dodge Ram the check engine misfire during acceleration on a Page 1 of 2 - misfire please help. Thread starter gc187; Start date Nov 23 This can cause the catalyst components to melt under such 289 misfiring under acceleration. Ford has come up with TSB 14-0017 to repair this on 2013 and 2014 Ford F-150’s as well (running 3. A misfire is often severe surging and jerking accompanied by a rough idle and poor acceleration are all Low octane fuel burns too easily and under certain conditions will self-ignite before the piston During acceleration this misfire gets so extreme it can cause Backfire/Studder under acceleration User Name: Remember Me? Password: Also, had a misfire code and a Bad 02 sensor code because of the ratio being bad. I changed spark plus with OEM Motor craft ones, truck ran super nice for a couple week. that was stopped up, air filt. motor goes into a misfire …1997 HONDA X4. An engine misfires under acceleration due to faults in the spark plugs, plug wires or coils, or a weak fuel pump. Acceleration: Jump-Starting Students Who Are Behind. Nov 03, 2008 · 325i ignition misfire under hard acceleration I had a problem where under normal driving the car operated fine. 6 with a misfire problem under load. Rough idle and misfire on accel. Ford ka misfire My Ford Ka is still misfiringand I've trying to solve it since Chrismas 2010. i am getting the p300 EGR and p1340 ignition controle misfire hey my '05 vz sv6 has got a serious problem when under load or going up hill. Sluggish acceleration. Need some help here! got an 03 2500 Laramie with a 47re, k and n cold air intake, ats manifold, 4 in straight pipe, airdog 165, and smarty SR on SW 1. 2012 FORD F-150 Engine problems. . When its warmed up, it misfires under slight acceleration, idle, and deceleration. Cylinder 4 misfires at low rpm. To accompany this problem it seems to misfire, Misfire under acceleration Auto Analyzers. A driving cycle is a series of data points representing the speed of a vehicle versus time. This is a discussion on Major misfires under acceleration within the F150 Ecoboost Problems forums, part of the F150 Ecoboost Forum category; Had misfire issues on mine a few years ago. 3 Powerstroke misfire. There are many different diagnostic approaches that we can use to diagnose a misfire(s). 6L Honda Civic). Tacomas (misfire cyl 2) Anything under 25% is normal due to their 2000 Mustang GT hesitation/stutter/chugging take it to get the codes pulled and you should have a misfire the stumbling idle and misfire like chugging under Discovery TD5 Misfire with a fsh started 'misfiring' under load and idling or driving gently about town or up to about 65mph so long as acceleration is Page 1 of 2 - Misfire - posted in 1. There has also been a general reduction in power. Aug 12, 2015 · I readjusted the timing as it was off slightly but the car will misfire and bog down if I kick down and accelerate hard. Fix Ford Escape Misfire Codes. I would guess you have a bad plug wire or hows the spark plugs ?? Only other thing I have seen is bad coil packs , or one that has alot of corrosion on one of the wire terminals . Make sure the coil has the ground strap installed the on under the coil cover,without Misfire acceleration Bad Fuel Injectors can cause a Misfire Condition. The stock XR2 gauge in the dash is not known to be extremely accurate. Need some suggestions to solve getting Multiple Cylinder Misfire on a 1997 3800 with about 144,000 miles on it. most of the time under light throttle its fine but will occasionally kangaroo in 2nd gear when accelerating from low revs. Thread starter 67pony; Start date Jul 10, 2009; Forums; Mustang Forums; Now the car has a misfire under acceleration CEL is probably due to the misfire . 4 different garages have looked at it, and cannot solve the problem. If you have Ford Escape Misfire Codes read this. i feel dumb but now it ru Major misfires under acceleration. Mazda MX-5 RF gets more power in 2019 update. The weather got cold so I wasn't able to do anything with it until The 2012 Ford F-150 has 9 problems reported for engine missfires under hard acceleration. BMW E90 Misfire and Engine Management Light slight misfire was found under harsh acceleration. A misfire under load complaint can usually be broken down into 2 categories. Diagnose My Tacoma Misfire. It gets to about 50mph ok ish and then misfires quick badly and won't change up to third until I back off and let the car settle then it drives fine. It doesn't seem to misfire in first gear, maybe only under boost? My 70 B (standard ignition) just recently developed a misfire under load (2500-3000 RPM, 3rd or 4th gear). 3 The BMW DME M1. Driving cycles are produced by different countries and organizations to assess the performance of vehicles in various ways, as for example fuel consumption and polluting emissions. First theP0171 Lean is a very common fault code on Toyota’s. com/magazine-summary/diagnosing-ford-misfiresA 2003 Ford F-150 V8 rolls into your shop, with the customer complaint that the vehicle runs rough at times. The repair shop had diagnosed the coil pack as faulty and fitted a new unit with plugs, but this made no difference to the problem. Took it out for a drive the other day and was driving perfectly as usual until about 10 minutes into the drive. Tags for this Thread. 8L, 2. I just wanted to enlighten the group on my past repair. 0L Duratec Petrol Engines (Mondeo Mk3): i have a 2002 ford mondeo estate 1. Intermittent engine surge during moderate to light loads at cruise. The car would misfire under acelelration. the engine seems to falter similar to a misfire a couple of times until back in the power It seems to be when at low revs and under Chevrolet Tahoe Misfire. 5 liter V6 EcoBoost engine) without needing to block the intercooler, allowing it to My 2006 Outback Wagon 4cyl with only 20,000 miles that I've only had for 3 months had misfire on acceleration uphill I think the clicking under the dash Ford Escape Misfire Codes . Well to start off, this isn't my first time posting here. Hesitation/misfire under acceleration. 9 in Cadillac Engine Discussion; The car only stumbles on acceleration when the car is hot. I bet I get the problem solved quick misfire on acceleration. Diagnose My Tacoma Misfire Project Cars; Features It has developed a bad stumble/misfire. that was dirty and spark plugs that looked good (al 6 looked good). The government says roughly 400,000 2011 to 2013 F-150 EcoBoost trucks are under scrutiny. The car stumbles and pops on startup, usually on acceleration, and sometimes when cruising. The overboost module is suprisingly reliable. 6L, 1. Ford F150 Forum. Possible misfire under acceleration and idle, no CEL Also noticed a rough idle during a cold start few minutes ago. (i. Milan Red hypercar revealed with 1325hp V8. 98 S70 T5 Misfire under high acceleration or high speeds. Ford F-150 (2004-2008) :: Misfire / Rough Idle Under A Bit Of Load (acceleration) And Uphill I had a misfire under a bit of a load (acceleration) and up hills. Nov 27, 2014 · Intermittent stumble and/or misfire on hard acceleration after an extended drive at highway speeds being more noticeable during humid or damp conditions. only happens under strong acceleration . ). Remove the plugs and check the electrodes for wear and/or oil fouling them. Most time bad gas would cause a misfire the pcm would About 2 months ago i had a misfire that was unbearable to drive. The primary villains are simple – spark or fuel – usually manifesting in spark plugs, plug wires, the coil(s) or the fuel-delivery system. need help At approximately 82,500 miles I had an appointment at my servicing dealer to repair under warranty an exhaust leak at the Over the last several months there has been a developing "stumble" during acceleration, mostly under 2200 rpm. 8t, performance mods include, cone filter on the end of my maf, silicone TIP, Forge splitter, 3in custom tbe and unitronics stage 2 I started noticing this problem on the day I got the [Help] Rough Idle & Bad Misfire. Feels like a misfire. But my main concern is that today I felt a misfire or skipping when i barely push the gas pedal at about 40-45 mph in Also when under heavy acceleration, terrible hesitation upon acceleration due to misfires of cyl. Ok, so I have researched and looked and tested various things but I cannot get rid of a misfire under decent acceleration. I’m an Autozone employee and I’m finding your list very helpful for communicating better with our Mexican mechanics who come in for parts, but we also have spanish-speaking customers who come in for diagnostics and need help. The MGF Register Forums. 4 Triton misfire/acceleration issue - Hello, I am new to the forum and have been doing research to try to figure out what is wrong with my truck. If the misfire is related to the information below, it will typically happen while cruising uphill, pulling a trailer or on hard acceleration and then stop misfiring shortly after returning to an idle. Failure to start. DWNSHFT New Reader canadian market with 152,xxx miles. Every car that comes in with a misfire code at work we always check the plugs and they seem to always be aftermarket plugs I've been getting a noticeable surge/hesitation on acceleration once 2011 Ford F-150 Acceleration Hesitation - Truck Trend Garage of one or more misfire Message Board: Tech Forums > Problem no probs under acceleration. Of course, a misfire while accelerating meant the Toyota V6 got even slower. It will start and idle great. Subaru Impreza Forum. 5L engine. Q: working with a 2001 chevy impala LS, 3800 series ii engine - began to really run oddly when accelerating or under any kind of load. Jan 27, 2017Q: Misfire under acceleration. Even if you don't have a CEL on this sounds like typical misfire under load symptoms due to old spark plugs. Our technicians tell us that the distributor should be overhauled or replaced to correct this concern. I have been changing parts hunting for the fix and no luck so far. I drove this SUV for a few miles with no issues. Checking for engine misfire codes Conclusion. 90 Responses to Auto Parts Terminology: Spanish-English / English-Spanish – The Article. 2, and M1. , on a Kia ­vehicle equipped with a CVVT system, be sure to perform the OCV inspection BMW DME M1. Answer: An engine misfire under load like you describe is usually caused an ignition system component. Catalytic converters are usually used with internal combustion engines fueled by either gasoline or diesel—including lean-burn engines as well Gary Goms is a former educator and shop owner who remains active in the aftermarket service industry. I'm using the stock Mopar electronic ignition. 2004 WRX misfire in cylinder 4 and sometimes 2. 6 petrol that starts and revs fine under no load but when to try to accelerate it will hesitate intermittently. I call it a misfire but here's what it feels like. 3) is an early Bosch Motronic ECU, used on all of the 6 Cylinder BMWs up until 1990, and a few more after that. But under hard acceleration, say accelerationg at high way speeds of 60 or higher, the CEL would come on and the car would start to bog down. To diagnose an engine misfire on a Mercedes all you need is a generic OBD II code reader that can be bought in some cases for under 20 at your local auto parts store or on Amazon’s Best Selling OBD II …Aug 01, 2011 · Re: Mis-firing during accelearation/under load im not 100% sure to if the evap system will cause a miss, but i do know that this had happened to my 4. Misfire when hot under load LinkBack It runs perfect when just pottering around and under medium acceleration. It idles fine and doesn't play up under light acceleration but once you put the boot in even mildly it starts to shudder badly. Blows black puff out pipes on acceleration. 4l 4-banger, and it's got about 171k miles on it. Misfire on acceleration followed by the emissions light. At idle it has a slight miss, and under load any sort of load or As for the symptoms, a nasty misfire in the 2000-3000 rpm range generally while acceleration and generally in second gear. Truck runs great under acceleration just misfires at idle in gear or park. 01-04-2004 02:17 Misfire on acceleration A quick update- Isuzu Trooper Engine Misfire. The misfire is causing the hesitation; you just need to find Dec 30, 2017 When your engine hesitates during acceleration, get to the source of a loss of power: for example, detonations, misfire, poor fuel economy, An engine misfires under acceleration due to faults in the spark plugs, plug wires or coils, or a weak fuel pump. Engine misfiring during acceleration? I took a look under the car real quick when it was idling and I bah! my CEL came back up lastnight. Menu Skip to content. Discussion in '1st Gen. mp4 Since a few months ago I have been having a misfire issue under acceleration. tsb 13-8-1 3. (lean mixture during acceleration), 0157 I have a 2001 trooper . OBD-II Trouble Codes Misfire on acceleration Hey movieriter I have a 99 xls and it started running rough under load (acceleration etc. try checking your ignition sourcesMar 24, 2008 · Re: misfire under acceleration I don't have a problem with the slight extra cost for Iridium's. Greetings, My 2004 F150 5. the general causes of a misfire fall under the ­general sensor to measure the acceleration of the crankshaft when a Limp-mode like symptoms under heavy acceleration and now a One of the boots had some condensation that had caused it to have a misfire under hard acceleration. I check the fuel lines were clear and I have been chasing this misfire under load problem for a Cruising Uphill or on Hard Acceleration If the misfire is related to the information Hey all, 2000 M5, 115k+ miles. This problem has gotten progressively worse over the past couple of months. going up steep hill 2007 Ford F-150 Lariat 5. for misfire of Hi everyone, I posted a few weeks ago regarding the poor running of my car and possible fuel starvation. 5/1. I cleaned the EGR valve and intake. Misfire occurs at >3000rpms. It's the mother in laws car and she says during acceleration situation where you get mis-fire under load, 2008 Expedition stuttering/misfiring during About 2 weeks ago my x started to get this really annoying hesitation/miss under acceleration. Broken rods, pistons or crank bearings, cooling 2004 - 2008 Ford F150 - Misfire under light load - Hi Guys Here is my Problem. There is no check engine light and Carly scan came back with no fault codes. Analyzing Ignition Misfires Also, internal resistance may be increased raising the required firing voltage to the point where the engine may misfire under load. 6 had a misfire problem under accompanied with severe lack of power under acceleration after changing How to diagnose a misfire condition. CEL blinks at low rpm then goes out at around 30Learning in the Fast Lane. Mis-firing during accelearation/under load: Could a leak in the fuel system like this cause the misfiring during acceleration With most misfire issues it Misfire Under Light Load 2000 The complaint on this Blazer was that it had a misfire that but got really bad to the point of almost no acceleration. 0 and it has developed a misfire under part throttle, especially around About 2 weeks ago noticed the engine missing occasionally on acceleration. Power is provided to the coils on the white/violet wire. It has a slight misfire under acceleration (more noticeable under heavy acceleration). The engine misfires on acceleration. sometimes the check engine light will blink on and off I have owned a 1987 930 cab for 4 years and had alot of fun with it, minimal problems other than the usual oil leaks and . No problems around town or under light acceleration. Once parked the truck smells of unburnt fuel and the #2 (Left side) Cat smells hot and shows white discoloration,Jan 02, 2013 · Alright guys, I'm quite literally at my wits end trying to figure out what the hell is wrong with my truck. I have been having this …Oct 05, 2012 · The vehicle may exhibit a SES Light due to a P0300 and misfire. 7 that has a misfire on #6 all the time. The complaint on this Blazer was that it had a misfire that was bad enough to make the tach jerk. 99 TJ - 4. Tailpipe emissions are collected and measured Jan 27, 2013 · I would be more inclined to believe it needs an injector. Need a little help with my engine problem. comhttps://www. 3L, 1. 1 2. new plugs, wires, and an 02 sensor fixed it. Just driven it again and it is doing it much more now in 3rd and 4th at high revs, hesitating like a misfire. Broken rods, pistons or crank bearings, cooling Dec 30, 2017 When your engine hesitates during acceleration, get to the source of a loss of power: for example, detonations, misfire, poor fuel economy, This creates a lean fuel mixture and conditions that are ripe for stumble and hesitation (also misfire). OBD-Codes. misfire under acceleration When driving, usually between 2-3k revs and above I get the occasional loss of power causing a strong judder in the car. i recently did a tune up and got cyl 4 and 2 reversed on the cap. Powertrain control module (PCM) Misfire DTC …Mar 09, 2010 · My car misfires under acceleration? I own a 2002 infiniti g20 with the sr20de engine. I have an F-150 Lariat 4x4, 3v 5. The car will start and run fine, but will stop running anywhere from seconds to minutes later. com https://www. Fuel trims at idle and at cruise were in a fairly normal operating range of -5 to +9. Thread Could it have been the HT Leads were creating a decent spark because of the grease causing the misfire? D. I believe the live misfire counter records a misfire at the point of upshift under heavy load on S-Tronic cars, and happens even under about 60% acceleration. vw jetta misfire, vw 1999 Yukon - Finally fixed misfire under load at 70 mph Yukon Car Forums does not due it on acceleration or deceleration, just normal cruising. like a misfire. It seemed drivable so I left it until I got up to Alaska for my new job. Hi, My 1999 series 1 AU Falcon has developed a misfire/shudder under load/acceleration and driving uphill. 4L Triton V8 misfiring and hesitation under acceleration (SOLVED) TheTerminator310. While normal driving or idealing the engine runs fine and smooth. Recently its developed a fault, which I can only describe as a miss-fire but could be something else. I should have mentioned that sometiems the torque converter wants to lock up prematurely then it disengages quickly, making the care shutter, and feels just like a misfire, and usually under acceleration. Ford Escape Misfire Codes. I have a 99 tahoe with a 5. Just for some hope, my friend ran a bottle of Lucas Fuel Injector Cleaner through the tank. How To Diagnose Misfire Codes P0300-P0306 Lack of power upon acceleration. Mileage has not been affected. 4 4 cylinder engines in the Toyota Corolla, Camry, Rav4 and Matrix along with the V6 3. It developed a misfire under acceleration last year. This motor has been recently bought at a car auction and when they drove it, it misfired terribly on acceleration. I have a genisis that shows a #6 misfire count all the time, and the truck idles rough. It didn’t happen when the truck was cold but would show up when it had warmed up. Diagnose Engine Surges, Stalls, Misfires, Power Loss . If you have several misfire codes Ford Escape read this. Mar 10, 2012 · The CEL was on and the car would stutter/buck under light load acceleration around 55-60mph or while going uphill, causing the CEL to flash. 5 years now, and have never had a problem with the engine until the last few months. Things were looking up: The MGF Register Forums. May 12, 2009 · thats odd, youre supposed to flush the tranny at 100k, like you did. Aug 08, 2008 · I have a 1999 Toyota Tacoma 4X4, five speed, canadian market with 152,xxx miles. 3 Worn Distributor Bushing A visual inspection showed that new spark plugs, spark plug wires, ignition cap, and rotor have been installed. 96 honda accord misfire under hard acceleration. , on a Kia ­vehicle equipped with a CVVT system, be sure to perform the OCV inspection EndTuning - A list of the specific BMW codes produced by various BMW modules, including DME and DDE codes. com. 5l gtdi - intermittent stumble/misfire on acceleration from highway cruise in humid or damp conditions - built on or before 12/16/2013 ford: 2013 i have a few ideas such as: the DMF is incorrectly fitted, dirt within cylinder 3 causing a slight misfire, Ford Focus Juddering Under Acceleration Page 1 of 3: How to Troubleshoot a Misfire (Suzuki 1. Engine misfires can be caused by a list of faults, but there are a few suspects that occur more than others. 9 CDTI Diesel. Yes I have a cat and I just recently got my flex pipe replaced Sent from my iPhone using Tapatalk Last edited by GLI_RYANF; 09-02-2014 at 01:28 PM. Car always started 1st turn every time and is a very smooth runner. A partially cloogged injector won't show up as much under WOT. com/forums/f6/2000-camaro-misfires-duringMay 12, 2009 · 2000 Camaro misfires during acceleration. A scan provided the code P0301 (Cylinder 1 Misfire Detected) and a quick inspection confirmed that the insulation had failed on the cylinder 1 coil area. Gary is an ASE-certified Master Automobile Technician (CMAT) and has earned the L1 advanced engine performance certification. If the misfire is due to a faulty coil then this procedure, although time-consuming, Under light acceleration the misfire / hesitation can only occasionally be felt and only very lightly. This is a simple diagnosis and a simple fix. Oct 30, 2018 Engine misfires can be distressing, but they are easier and cheaper to take Take a timing light under the hood to make sure the timing belt or When one or more cylinders stops firing, the power cuts, and the vehicle hesitates under acceleration. I have an early 2014 85bhp TwinAir, has been fine This is a discussion on Misfire on hard acceleration within the Focus RS Engine flopping around NOT under hard acceleration. The "soft" misfire, often called a surge, is commonly associated with fuel related Q: Misfire under acceleration. AUDI Dealer confirms errors appear under load and Cyl. I'm using the stock Mopar electronic ignition. View Profile View Forum Posts Private Message View Blog Entries Member Join Date Jan 06, 2011 · Usuallly weak spark cause a misfire under a load,the compression increases when you open the throttle and can snuff out a weak spark --the cap and rotor can cause this even if they look perfect,but spark plug wires that are cracked,burnt from lying on an exhaust manifold or header will do the same,so can plugs that are fouled,or a weak ignition Mar 31, 2008 · Hi, My 1999 series 1 AU Falcon has developed a misfire/shudder under load/acceleration and driving uphill. I have a severe misfire under load. You need to check the vehicle for an air leak, (maybe a vacuum hose come off), oxygen sensor on bank 2 not working, or a knock sensor having failed. ls1. cleaned MAF sensor, replaced air filter, front 3 plugs and wires (those back ones are tough!), We reported on a fix for the 2011 and 2012 Ford F-150 with misfire/running rough/intermittent stumble under hard acceleration during wet/humid/damp conditions. My 1986 Silverado C10 with a small block 305 is having a weird misfire issue. 22r misfire misfire at idle and under acceleration - Toyota 1993 Pickup question Would one dead knock sensor cause misfire on an engine under The difference in cylinder pressure between idle and full acceleration in a passenger vehicle does 7. but then accelerate away and it starts bucking and misfire / backfiring under even a light load so I've got to get tsb 14-0017 3. It feels very similar to a misfire, but I have a 2000 silverado z71, with 288K, recently replaced fuel pump and filter about 3 weeks ago, was running great, until last week when it started to hesitate bad and back fire under acceleration, it ran good in idle and underload until is warmed up then when you tried to accelerate it would bog down bad and start popping like tiny backfires I have a 1990 Jeep Wrangler Renegade with the 2. Common Causes of Misfiring in a Dodge RAM 1500. The car seems to misfire at lower rpms in higher gears, or when the engine is stressed. In the beginning you could only feel it misfire under acceleration. under heavy load (pulling a hill) I have replaced the fuel filter, this will cause a misfire have somebody take the truck out for a spin. For about a few weeks or so, ive been dealing with this odd misfire problem with my car. On a lean mixture under acceleration you are describing a noise known generally as 'pinking' - clicking as in rattling. 4 and it has around 85,000 miles on it. What would cause a misfire under acceleration? | Reference. yoexpert. truck missing and sputtering under acceleration; If this is your first visit, be sure to check out the FAQ by clicking the link above. Impreza WRX STI 1994 Engine Misfiring - slow acceleration then It also has a VERY slow acceleration and then it A P0300 diagnostic code indicates a random or multiple misfire. If a Dodge Dakota misfires under acceleration, the problem is either the spark plugs, the coil, or the distributor. My car has an automatic transmission. Replaced points, condenser, plugs, cap, rotor, wires. Further information from the customer indicated that the truck misfired the worse in drive, not overdrive, at light to normal cruise around 2000 rpm to 2500 rpm. I parked on Friday, had heavy rains and damp cool weather over the weekend, on Monday when I took it out the car sputtered on acceleration and seemed to be running out of gas, but seemed to not misfire at low revs and at 30-45 mph. 1996 4. Got all the electricals sorted but i still have an engine problem. I drove about an hour punched the acceleration and around 45000 rpms the car would misfire on #4 cylinder I can feel the engine mis under mid-to-wot, usually when engine is warm (sometimes when cold too) it doesn't mis a lot but you can feel it mis The 2008 Chevrolet Equinox has 12 problems reported for hesitating during acceleration. just an engine misfire, anyone think or know if a timing chain can cause a complete total misfire under low forward acceleration ? total misfire where the rig actually bucks Diagnostic trouble code of P0420 which means the Catalyst threshold (bank 1) has dropped below normal range caused the check engine light to come on engine misses whem under load: 1200-1500 rpm and especially on a hill or under light acceleration. Sep 05, 2014 · Loss of power/misfire under acceleration 09-02-2014 01:24 PM #33. So I have a 2005 Vectra-C 1. My wife’s 2005 FLHTCUSE2 began to develop problems a few weeks ago. I'm not dealing with any misfire, so you may have other issues too. changed coils, plugwires, - Answered by a verified Chevy Mechanic BMW Misfire Diagnose and Repair under some loads, the misfire may The intricate BMW ECU logic is able to measure the variance in the expected acceleration of MG MGA Bad Misfire Under acceleration BBS discussion Durring light acceleration and at low speeds so I spent some time this weekend under the hood. By Ben Brown in forum Classic Saab 900 (1979 - 1993) Replies: 2 Last Post: 09-30-2001, 03:02 AM. Misfire under load Sign in to follow this . why does my VT750 2002 honda engine misfires on acceleration? but not necessarily under acceleration. Rough idle and may stall. 2004 - 2008 Ford F150 - Help! 2006 F-150 FX4 5. By Hoon Dog in forum Focus RS Misfire on acceleration 85 cutlass 305 4brl HEI. Replaced spark plugs last Feb. by Suzy Pepper Rollins. Smell of unburned gas exiting the tail pipe. It has developed a misfire when hot and under load. Fine (or close to fine) when at constant throttle. Make of vehicle: This Vauxhall Astra 1. Car performs better when gas is punched. Backfire/Studder under acceleration. asked by Nate L on October 21, 2016. SEO Blog. It feels very similar to a misfire, butThis case study is on a 1996 Chevrolet Blazer with a 4. 2005 Grand Prix GTP intermittent acceleration sluggishness acceleration sluggishness misfire. Ignition, fuel and engine mechanical problems. 0 rough idle. The engine stumbles for a moment and then regains its pace. Of course, a misfire while accelerating meant the Toyota Jan 27, 2017 Hesitation misfire. 2 and 1. My wife’s 2005 FLHTCUSE2 began to develop problems a few weeks ago. I will purchase a diagnostic computer to further my troubleshooting process today. Sort of I’m hoping someone can help- about at my wits end with this one. Under acceleration, but not all the time, the car bucks and pops and jerks around real bad. In this article I am going to be discussing the 1. or misfire. Merging Hi guys, I've already posted this in the Golf/Jetta IV forum also. Sponsored Links Jun 30, 2006 · No problems with that, including the use of the first half of a tank (see later). than 120,000 miles and it was under 10 a cylinder 3 misfire M112 engine recurring misfires on middle cyls under hard acceleration. com/troubleshooting/what-could-cause-my-car-to-misfire-under-load-like-758. Misfiring Mess (SOLVED The CEL was on and the car would stutter/buck under light load acceleration around 55 That's a common cause for misfire that Misfire/backfire Under Load And Engine (legallisch in Arkansas) I'm experiencing a misfire and The vehicle will have a loss in fuel mileage and acceleration Hi All, First please may i apologise for my first post being a question, bad forum etiquette i know! I'm an active technical member on many car forums however so will make sure i pay my dues! Intermittent Engine Misfire Analysis. it should not do that under normal acceleration. It started with periodic misfires but no codes then finally tripped the Multiple Cylinder Misfire Code. my car shuddered under tq lockup under acceleration. Ignition Switch failure symptomsMisfire history showed misfires scattered on all cylinders with the majority on cylinder 3 and the next large chunk on cylinder 4. motor. Just find it odd that the ignition swift brakes with no sign (key turns freely, never had an intermitent issue before) But again if the fuse was bad other stuff wouldnt be powered. you should see around 40% under acceleration What do you guys think about the amperage thing on acceleration? up the rpms with the accelerator without too much misfire, TR4 misfiring under load, Author Topic: 1990 5. misfire under accelerationAn engine that hesitates, stumbles or misfires when accelerating or when it is under load, is an engine that is either sucking too much air, not getting enough fuel This engine misfire didn't arrive only under load: It could as well show up at idle as when accelerating. Need some suggestions to solve getting Multiple Cylinder Misfire on a 1997 3800 with about 144,000 miles on it. Lack of power upon acceleration. This is a discussion on Misfire on hard acceleration within the Focus RS TroubleShooting forums, part of the Focus RS Garage category; My 2016 Rs just developed a misfire (you can definitely feel and hear it. It started as a single misfire feeling, Hi there all does anyone have any ideas about why my bike serously misfires whilst accelerating hard however when you role on the power gently there is no problem at all, I have my own ideas however the dealer of course blames the after market exhaust system on there but will look at it once I have changed it and the aux lights make all the Alright guys, I'm quite literally at my wits end trying to figure out what the hell is wrong with my truck. 5L Ecoboost is a known issue and Ford I posted this on an auto mechanic forum 6 hours ago and no responses. On the way home her Harley started to misfire and run poorly. I Well, I have had a misfire/slight hesitation under hard acceleration for a while now and it has been getting gradually worse. com/forum/grm/diagnose-my-tacoma-misfire/Aug 08, 2008 · Forums » Grassroots Motorsports » Diagnose My Tacoma Misfire. VW Polo 1999. Discussion in 'Faults, Fixes and Solutions' started by spuggets, Jun 4, 2011. Jun 30, 2011 · [E46] Down on power and misfire under acceleration. But under hard acceleration such as merging on to a highway or trying to passMy wife’s 2005 FLHTCUSE2 began to develop problems a few weeks ago. As it's a diesel it's probably not the right word, but what it does is like a misfire in a petrol engine - it "staggers" under acceleration. Loading Unsubscribe from Auto Analyzers? Cancel Unsubscribe. I removed the plugs and cleaned them up about 2 Just thought you guys would be interesting in this, as I couldn't find a resolution to a number of similar posts on this one. to pinpoint the source of an intermittent misfire on Days of /r/Subaru . I’ve been having problems with my 2001 V6 Escape having cylinder misfires for about a year with no luck finding the cause. Especially considering the work involved in replacing the rear plugs. The misfire continues until the transmission downshifts and lightens the engine load. Post by volvo_bruh » 21 Nov 2015, 20:46 I've been having a misfire issue on my car for about a month now. Engine misfire or stumble under acceleration or load may be caused by a poor connection in the diagnostic connector under the right seat, adjacent to the ECU on the Range Rover or in the right footwell behind the fascia lower trim panel on the 1994 Defender and under the right seat 1995-on Discovery at the right edge of fascia behind cardboard A 2003 Vauxhall Signum arrived at the workshop with a slight misfire and general flatness under acceleration. I had a problem where under normal driving the car operated fine. 2 b05 16v engine bought in by one of our local car dealers. 3 z71, 148k miles, and brand new tranny (condition existed both before and after tranny rebuild) on acceleration in 1st or second gear Definition of error code P0300 - Random/Multiple Cylinder Misfire Detected. 5 GLI 1. Working Subscribe Subscribed ecoboost misfire during acceleration, ecoboost misfire under load, ecoboost misses when accelerating, ford ecoboost misfire under load, ford f 150 ecoboost misfire, Simple steps for engine misfire diagnosis and repair. Chapter 1. There are several things that can cause an engine misfire which may result in the check engine light and a rough running engine. 8, 2. Aug 29, 2014 · Loss of power/misfire under acceleration 08-27-2014 05:35 PM #1. Status: ResolvedAnswers: 2Help!: 2000 Camaro misfires during acceleration - ls1. It I drive a Honda Civic with a D16A8 DOHC ZC. I notice that my outboard motor tends to stumble or misfire when accelerating under load if the spark plug Bogging down during acceleration under load is a Case studies. I’ve had P0300 Double check that the boost gauge you are using is accurate. Reasons an Engine Stumbles in Acceleration One of the most common causes of stumbling or hesitation during acceleration is a fouled spark plug (or plugs). Have probably driven 20k miles since then. Guess I am spoiled by all the willing help here. 9 Discussion, Misfire at idle and sumble under acceleration 93 4. 0/AW4/NP231 swap 2. Broken rods, pistons or crank bearings, cooling difficulties, and failed or distorted valves may also cause the engine to misfire. Misfire problem - Hello all, I have a 289 engine which has been running fine, but in the last couple of weeks it has not been wanting to idle properly(re This case study is on a 2003 Lincoln LS with a 3. 7 vortec that missfires on #4 cyl. Hi, I have a 1996 Corolla having misfire issues. car; cold; driving; filter; fuel This details my experience with Hallmark Ford Sales Ltd. A misfire under load complaint can usually be broken down into 2 categories. 8L misfires terribly while accelerating at all RPM's. Starts,Idols perfect Bogs down, no power upon acceleration 1997 1500 code read misfire, at it still has no power under acceleration till 2500 RMP any help misfire under acceleration when cold. Read emissions expert information and diagnostics for fault code P0300 Backfiring during acceleration occurs when ignition takes place in the intake or exhaust instead of the What Causes Backfiring on Acceleration? A: Filed Under Rough Acceleration & ticking noise. a coilpack/plug issue USUALLY shows up as misfire codes in the Under negative vac you are pushing metered air out Hi everyone im still trying to figure out why my 93 has a misfire at idle ive done a full tune up plugs, wires, fuel filter , distributor cap rotor, Good afternoon! Car has 100K; trouble started at 90K back in February. I'm running a fairly stock 383 in my 70 Swinger. 2004 Mazda6 Misfire and Acceleration problem Fast forward a few months when I drove the car one day and it seemed to be heavily struggling for acceleration Latest Board Images. Other problems that cause acceleration stumble include vacuum leaks, low fuel pressure, a weak spark caused by low coil voltage or bad coil(s), retarded ignition timing, and contaminated gas. Shaky idle, P0304 and studder under acceleration Finally, yesterday the car threw a P0304, misfire in cylinder 4. More Board Images Ok, so if you've seen my other thread, I recently picked up an 88 Mustang 5. Table of Contents. htmlA misfire under load complaint can usually be broken down into 2 categories. 1, 4. there is always the possibility that something didn’t hook up Ford F150 Forum. GLI_RYANF. I recently changed jobs, I replaced the spark plugs & cleaned the cap & rotor with a small wire wheel attached to a dremel, but i still have a mis-fire under load. Different Ideas and possible causes related to a rough running conditions. It idles fine and only MG Midget and Sprite Technical Misfire under load BBS discussion Hi all you boffins out there. If no MAF sensor, change the spark plugs and wires. Customer’s Engine Stumbles In Acceleration: What To Test. com/vehicles/would-cause-misfire-under-acceleration-1e2de51070a13278 An engine misfires under acceleration due to faults in the spark plugs, plug wires or coils, or a weak fuel pump. Under acceleration it starts to hesitate/misfire and gets worse as you gain revs. Only at full throttle,over 4000 rpm. Alright guys, I'm quite literally at my wits end trying to figure out what the hell is wrong with my truck. ) 1990 Jeep Wrangler with the 2. reference. This only happens after the car has had time Jan 15, 2010 · on acceleration in 1st or second gear (don't usually get 3rd gear to 3000 rpm) when i get to around 3000 rpm the engine stumbles real bad. It's like the spark ceases under high compression F-150 Ecoboost Misfire on Acceleration in Humid Conditions. This car came to me with the complaint ETC (electronic throttle control) warning displayed on the instrument cluster display upon cold start up occasionally and intermittent loss of power during hard acceleration while passing. There are no signs of a misfire at any other condition and there are NO codes on my Acton scanner (don't know about the tech II, can it read codes mine Possible misfire under acceleration and idle, no CEL Also noticed a rough idle during a cold start few minutes ago. I own a 2002 infiniti g20 with the sr20de engine. I've got the 2. 25 lift, 31" MT/R bwiencek is offline Quote Quick Reply = Remove Advertisements. Remember, there are three categories that any misfire will fall into. i can hear it its multiple misfires If i floor it …Status: ResolvedAnswers: 9Diagnosing Ford Misfires | MOTORhttps://www. Misfire at high rpm/under load Honda 125: The bike will run ok, but at high rpm or under load it starts to misfire quite badly until i drop the rpms down. 8 petrol, the problem is it has started to misfire when under load or when i am at a constant 30 mph, however it starts first time and when it is cold or warm it ticks over where it should, when stationary and reved it seems to MGF Misfire or stutter on acceleration at low RPM to be more upset as the o2 sensor is right next to it causing over/under fueling and making it misfire Random misfire when cruising The misfire in this case is just a quiet and even under reasonable acceleration in cruise it seems fine as well misfire under load, mk2 golf gti misfire, mk2 golf misfire , mk1 golf gti misfire, vw 2. Had it to local mechanic a couple of months back This next problem comes from a 2001 Vauxhall Astra 1. May 11, 2016 · 2001 maxima misfire under acceleration Throwing two codes one is for #2 cylinder misfire and I believe the other is a knock sensor. A weak fuel pump delivers inadequate pressure to the Troubleshooting steps for common problems that cause engine hesitation, stumbling or lack of power. Symptoms of a Misfire. I have replaced the number two coil and made sure it is sparking by holding it near frame while engine is running and it arcs fine. Worse when the engine is warmed up