5 miles of driving. Fuel injector 1 circuit poor electrical connection. 2004 F150 5. When cold starting this car would misfire, but when warm it quickly cleared. Plugs and O2 sensors recently replaced. bummer I had the same issue with the 2005 cobalt with a misfire on#4 only happened in the AM when cold and would be ok the rest of the day. Misfire is only noticeable below 1700 RPMs. low RPMS) after driving at higher speeds for a while. Lots of threads on misfires but nothing particularly relevant to my situation. I noticed that my 2004 Aveo has some kind of misfire or uneven idling, especially when cold. And I forgot no codes. Jan 12 2014, 4:59pm Lately I've been having to leave my truck idling for up to 15 minutes before I can drive it without drastic sputtering and misfiring. Misfire on #6 only when cold - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. Dealer said it was throwing codes for cylinder #6 misfire. Pull off lot driving normal. Misfire from cold. The idle will be perfect. After 5 minutes of misfiring it seems perfectly fine, until the next morning!. When I am on the street and come to a full stop at a stop sign, Ive noticed once I step on the gas coming outta first gear i get a slight misfire hesitation. 2 cylinder Spark plug, Ignition coil, and Direct injector had already been replaced!. After a short ride, we stopped for her to get gas. I understand it could be a blown head gasket but I want some opinions on what other things it could be before I tear apart the head. Runs great when cold. The dealership ended up replacing the spark plug in cylinder one and sent me on my way. When I check the MHD serval codes come up to say multiple misfires, or misfires on cylinders 4/5/6. The wiring harness has seen better days and next paycheck he's hoping to buy one from a member here. I have an 18 vstrom 1000. If you let the car come all the way up to warm, the CEC light will sometimes come on during driving with the same code (C1 or C4 misfire) but you don't notice anything with the car when that happens. I would not worry too much on it, these misfires can happen while cold or after warming up a bit but they should all be only happening at idle. The truck has 190K miles on it and runs fine other than a misfire. More so in very cold weather. Since the light is on, The best thing to do at this point is to have the "Diagnostic Trouble Codes" (DTC's) read from the onboard computers. Cold misfire. So it was not a clean misfire, other things went wrong at the same time. It is not vacuum leaks, injectors, carbon, plugs, coil, etc. I have a 2001 Toyota Rav4 and I am getting a misfire code for cylinder 4. 2008 BMW 335i 3. After about 15 mins she showed up and said her bike would not stay running. That being said, choking doesn't cure the problem and I suspect that it has the opposite effect on the cylinder that I think is acting normally. It had a low compression in 1 cyl that was diagnosed as the problem, so that head was refurbished. It runs fine when cold then when warms misfire occurs. My mk1 focus 1. If i try to drive it in this state it also sputters while in motion, sometimes so severe that i can't get the car up to driving speed. The FICM can cause an intermittent misfire; it is common to see a misfire between 45 and 65 mph when a FICM is failing. This condition may be caused by a worn intake valve and is typically found on vehicles with 50,000 or more miles. 2005 CHEVROLET EQUINOX Recall both at cold operating temperatures. Typically it would misfire enough to throw a CEL, resulting in fuel-cutoff to that cylinder - a re-start would usually cure the problem. A Technician may comment of hard or no starting when cold. Misfire is only noticeable below 1700 RPMs. Generally when it happens it will start with misfire codes sporadically when the car is cold(or has been sitting for a while). It would come and go and it only happens for 20-30 seconds during cat warm up mode only so I just lived with it. while I replace the spark plugs, I also switch the coil packs from cylinder 4 to 3. I have spent quite some time searching the forum to make sure that im not asking a retarded question that has already been answered too. It's started misfiring on cylinder 3. Frequently (I'd say 4 out of 5 times), when I first start my X1/9 when it is cold, it seems like will misfire continuously for a minute or two (doesn't run smooth and has almost no power). The engine may only misfire and run rough when cold but then smooth out as it warms up. If you've got a multimeter, you can do a lot of testing. As the spark plugs, ignition cables, distributor cap and rotor, and ignition coil wear over time, their ability to transfer the needed spark to ignite the air-fuel mixture inside the combustion chambers becomes compromised. The misfire may be due to a recent ejaculation, or chasing an orgasm way to soon. Scan codes reveal misfire on bank 1 and related ignition coil fault and O2 sensor control limit. Misfire after warm up. if it had been sitting overnight or longer). I keep getting a misfire when the engine is just warm. After about 15 mins she showed up and said her bike would not stay running. Q: My car has a misfiring problem when completely cold. Old oil in the firing pin channel may slow the firing pin velocity. I logged misfire counter per cylinder using vcds and it's misfiring on cylinder #4 exclusively but only registers about 4 misfires and stops after about a minute. A6 / S6 (C6 Platform) Discussion - 3. Corroded or loose wiring connections, a low system voltage and a bad relay, which affect the fuel pump, usually cause the engine to stumble. I thought everything was fine after resetting my ECU last week, but had bad misfiring at idle again this morning which set the random misfire code. It started this summer a few times. Its not there much at idle or WOT. 8is); E60, E63/64, E65/66 with N62 from 06/04 up to 02/05 production SITUATION. If there is too much fuel and not enough air, the mixture is said to be too rich. Warranty Extension – the warranty will be expanded to cover engine misfires for 8 years after the purchase (not mileage limitation). 8 injektor problem, missfire on vectra c 1. Hi i have a vauxhall 1700 dti 52 plate. i fired it up in the morning to see if maybe it went away thinking it could be the coil packs but it still had the misfire from cold start. Ford Focus - Rough idle on petrol focus. One of the most common causes of engine misfires are the tune up parts. Thereafter it's fine. Hi all, My 1999 Boxster is having a problem of the engine misfire when I start the car first time in the morning especially when its cold or it sits for a few days. Cold start misfire I've been getting misfires in different cylinders after a couple of seconds to minutes during cold starts. 0L misfire when cold? 6. Possibly engine temperature sensor, but that is a long shot. 0FSI misfire when cold(ish) Had the car about a month now and on a couple of occasions have suffered power loss and a stuttering misfire - both after a couple. These are almost impossible to test for with smoke and/or spraying with brake cleaner or carb cleaner. It has something to do with cold engine with the computer, for when at operating temperature it is fine. Misfire is only noticeable below 1700 RPMs. Tight valve somewhere. Misfire after warm up. Misfire Diagnosis: Dirty CPS My little blue buzz bomb has been driving like it's up to it's bumper in peanut butter. It would only misfire on cold starts (i. 430 bullets. 1st Gen R53 Cooper S Rough Idling @ Cold Start & Random Misfire Issues Discussion in ' 1st Generation: 2002–06 R50, R53 & 2004–08 R52 ' started by minsanity , May 1, 2012. On the way home her Harley started to misfire and run poorly. A misfire under load complaint can usually be broken down into 2 categories. I had this problem for almost 3 months now, misfire when starting the car, RPM drops very low and fluctuates, vibrates violently like driving an tractor; already sent to 2 different workshops but still not fixed, changed coils, changed spark plugs (3 sets) and VANOS solenoids also. I logged misfire counter per cylinder using vcds and it's misfiring on cylinder #4 exclusively but only registers about 4 misfires and stops after about a minute. 4 3V Triton engine Misfires when Cold 4 Answers Starts fine and regular idle for 20 seconds, then hard misfire on cylinder 4 and 8 until engine warms up, then runs like a champ. Then the engine shudders from misfires and nearly stalls. An owner may complain of misfire or roughness during a cold start. Sometimes it's bad enough to turn on the CEL, sometimes not (but it's always logged in the computer). I would say its down to heater plugs, the misfire when cold starting is because the temp in the relevant cyl on the first few turns of the crank isn't high enough for combustion. "It takes a lot more time, but the end result is that I am getting to more qualified and more willing. The infamous "cold start" misfire E46 325ti 220000km on the clock and still going strong, that is besides the odd cold start misfire. If the engine speed fluctuates enough to cause the Crankshaft Position sensor signal to vary, the Engine Control Module can determine that a misfire is occurring. The engine may only misfire and run rough when cold but then smooth out as it warms up. At least I don't remember it doing so. I first read a few posts of misfires but didn’t come across anyone talking about all four. Give it a little Rev and it still misfires. 4, My problem is when I start the truck when it's cold I have a misfire until the engine is at normal operating temp. No misfires occurred under normal driving conditions. " If it still misfires under acceleration or at higher speed with richer mixture, then it has to be a spark problem. Ever since my last MOT a few months back the car has been playing up, it goes like so: When I first start the car and the engine and temp gauge is cold it runs smooth as silk straight through the rev range smooth no issues as soon as it has warmed up (5 mins) it starts to misfire (on #3 incidently) and even then only upto 2000 RPM from 2000. Misfires under load. Cold Start Misfire Drivers often face a misfire problem when starting the cold engine. Misfires are more VWVortex. Idle slowly got more rough as the temps dropped. I had a similar problem with my 2000 sts *star about rough idle at cold startup, then as engine warmed up it went away. Dealer said it was throwing codes for cylinder #6 misfire. I'll probably replace the Thermactor Valve after getting it inspected, unless someone can tell me why that would be a bad idea. An engine cylinder misfires when it is unable to efficiently burn the air/fuel mixture in the combustion chamber. An ignition misfire can be consistent (all of the time) or it can come and go (intermittently misfire). Misfire when cold. Intermittent misfires are the worst kind to diagnose because the misfire comes and goes depending on engine load or operating conditions. So I've been having an issue that started Saturday after cleaning my air filter and doing a KAM reset (SCT X4 by the way) When the engines cold it misfires like crazy on light throttle, but if I hit even 1psi of boost it runs perfectly. Misfires can be caused by fuel mixture problems (too lean) in addition to ignition failure. Take a look and see the many great features that City of Cold Spring has to offer. If i try to drive it in this state it also sputters while in motion, sometimes so severe that i can't get the car up to driving speed. com and affiliated sites. Misfire on #6 only when cold - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. 3l when engine was cold the seals are hard allowing vacuum leakage. I feel the characteristics eliminate many possibilities. Car would run fine when engine was cold. Hi y’all , this is my 2nd 2001 MR2 and she started ruff idoling and engine light on. I have got a A2 1. Sort out your timer relay and the problem will go away. It does not misfire. Therefore, none of them alone is cause enough to replace one. But is zinc an effective treatment in beating those common-cold zombies out there? Read on to learn five ways zinc may be on our side when it comes to colds. Latest event; cold start generated misfire, rough idle and check engine light. It has a coil pack & spark plugs. It's me again. The insides of the other 3 cylinders and plugs looks clean. I keep getting a misfire when the engine is just warm. If you've got a multimeter, you can do a lot of testing. vauxhall 1700 dti deisel - misfire when cold. Those two things always show up worse at idle, and cold. No check engine light displayed. And YES wires or plugs can cause a misfire when the engine is cold. Any time the engine is cold, whether it is cold outside or the car has simply sat over night, it will throw a misfire code on start up. for the love of nature. to visit the utmost refuge of beast and bird. 2nd gear either. Everytime I start my car after a cold start, i usually let it warm up for about 2mins. This is a relatively new symptom that started a couple seasons ago and it happens in both warm and cold seasons. Login Register. It bucks violently but never stalls. Since it's happening across all cylinders, I'm a bit stumped. Had a couple coils over the years go out of spec, one checked fine cold, but when hot it went WAY out of spec, explained the misfires after about 5-10 minutes of run time. When no more rpm pulses arrive at the ECU the power is cut and the valve is opened by a coil spring (unless there is a lot of rust in the chamber between the valve and the solenoid). the engine is cold. If I do not allow it to misfire in the next 3 drive cycles, SES will clear itself. 5 engine aoutomatic) with 67000 miles on it. Intake manifold gasket, this can leak to single cylinder, cold start misfires that usually only happen after sitting overnight and at temps below 50F. Re: 2005 Cadillac DTS misfires when cold. When the engine is cold the fuel sits in the cylinder and causes a misfire on start up until the cylinder clears its self. Cold Start Misfire Drivers often face a misfire problem when starting the cold engine. When I first start up my engine in the morning I can notice the misfire and. If the engine is warm, It does not appear to have the misfire on startup. Still makes no sense. I'll check and post up with my findings, hopefully i can find some time tonight or tomorrow morning. My daughter's 2003 Focus wagon, 2. This is a one-stop shop for our team. Smoke, misfire only when cold Not even that cold out yet, maybe 50* and the truck puts out a lot of white/grey smoke after starting. This particular example is a hybrid, blending a gritty crime drama à la Mickle’s own Cold In July with a high-concept sci-fi story about a time-traveling assassin named Rya (Cleopatra Coleman) who’s working her way backwards from the. Runs fine, accelerates fine when engine reaches normal operating temp. net - Car Forums, Automotive News and Community. Engine misfires can catch you off guard. Injector cleaner applied every 10K miles since new. Reply to posters below: Dont smell fuel after start but will expect that with misfire. I'll check and post up with my findings, hopefully i can find some time tonight or tomorrow morning. It would come and go and it only happens for 20-30 seconds during cat warm up mode only so I just lived with it. New Zealand Cold Storage Association: The New Zealand Cold Storage Association comprises companies involved in the cool or cold storage and transport of meat, dairy, fish, horticultural and other products requiring controlled temperature environment storage. for five years now the car will have a surge in the idle quality that will accelerate the car, or it will misfire like it has no fuel on cold start up. right, when cold my car misfires and struggles to idle without giving it a bit of throttle. if I hold the rpms back up to 1000 when cold the rpm's go up and down a little but runs fine when warm. So take to a shop and have it stay overnight so that they can properly diagnose. The hardest to diagnose is an intermittent miss. Has anyone got any suggestions on what is causing the misfire. At least I don't remember it doing so. It now has 66,500 miles on it, and at the moment, the car misfires often and hard when it is absolutely cold then proceeds to get better (almost to the point of perfect) as the engine warms up. NEED HELP Misfire only when cold. It then clears up and the car runs fine. 0t How To Install Ignition Coil on a 2. 0 liter V6 is prone to cold start misfires, particularly on cylinder number six in combination with coolant consumption (frequently with no external leaks present). i checked this yesterday and swapped for a new plug and still the same thing. You may not see smoke at tail pipe because it is a small leak but just enough to cause it to misfire. The goofy part is that it only happens cold, and persists until you shut the car off. You should also check the timing too. Until you part the car up and leave it over night. They seem to occur for no apparent reason. Compression on #6 is good. 8 idles at 650-700rpm when stationary and sounds like it is low on power and stutters. After warming up she runs fine, only durning cold start ups does she misfire. Misfires are more VWVortex. Bad Misfire when cold I have a LPG gas converted X400 2. Possible causes. Re: 300 Misfire when Cold in reply to Tom Fleming, 02-06-2011 06:24:13 Thank You. Misfire is a lot more likely to occur after the engine reaches normal operating temperature but I have witnessed cases in which a misfire could only be detected during cold start conditions. sensor, thermostat, etc?. 7 only 55K miles - What is causing an intermittent misfire at startup? It's been running great, then 2 weeks ago when I started it up I could feel a misfire. When i picked the car up the garage said there was a misfire from cold. 240 Running on 3 cylinders when cold/wet maintenance & nonperformance 240 Running on 3 cylinders when cold/wet - Turbobricks Forums Turbobricks Forums > Mechanical > maintenance & nonperformance. Sometimes 2-3 days will go by without incident, and then wham. You may not see smoke at tail pipe because it is a small leak but just enough to cause it to misfire. When no more rpm pulses arrive at the ECU the power is cut and the valve is opened by a coil spring (unless there is a lot of rust in the chamber between the valve and the solenoid). All the data PIDs look reasonable except the MAF was reporting 19. A weak fuel pump delivers inadequate pressure to the engine and causes it to run lean, hesitate and misfire when accelerating. If it continues much longer, it'll be going back to the dealer for warranty work. and it still misfires on the same cylinders just. I had a misfire a back in oct 2009 after about five times to the dealer and $600 now they say it could be my coil packs and another $500. With and Without Misfire Codes. I took it on long business trip yesterday and it seemed to misfire for more than 5 minutes, which it's not done before. I cleaned the throttle body, put in a new air filter, tested the tps,pulled the front bank spark plugs ,they look fine. No improvement!! Winger Subaru can't work it out but suggest using higher octane fuel. This could be caused by several things; 1) Dirt in one of the needle and seats. My theory was that there was damp in the connectors to the piezo injectors. 2010 F150 5. 1 for the gauge and one for the ecm. Misfire when cold, white smoke. Also replaced fuel injector with no change. i have a 1989 lx sport with 140,000 on the car, i bought it in 2001 with around 92,000 on it. The infamous "cold start" misfire E46 325ti 220000km on the clock and still going strong, that is besides the odd cold start misfire. com Hello all, I recently bought a 2007 Toyota Tacoma 4 cylinder (2. I start it in the morning when its cold and she starts first time everyt ime but when i pull off its missing and there is no power as i am driving along it starts to get better and after about a mile or two she is right as rain. Worn out camshaft lobes, stretched timing chain, and other components of the mechanical valve train that are not working properly causes misfire – which means they should be inspected thoroughly. Upon cold start in the morning the engine fires up and runs fine for a few miles. Toyota 4Runner cold start misfire, coolant consumption, P0306 diagnosis tips The 2004-2009 4Runner equipped with the 1GR-FE, 4. Re: HELP!! Misfire and white smoke when cold. I have done this. By this point, your engine's PCM should show a code. If you let the car come all the way up to warm, the CEC light will sometimes come on during driving with the same code (C1 or C4 misfire) but you don't notice anything with the car when that happens. I have a 2009 Tacoma 2. We're talking about engines that start easily and accelerate smoothly, but then, after a few minutes at a steady speed, either surge in speed or misfire, causing the car to "buck. A misfire is what happens when a cylinder fails to combust its air/fuel mixture correctly. it will miss for about 30 seconds on one cylinder then miraculously start working perfectly after a few. P0305 Description When a misfire occurs, engine speed will fluctuate. I have been fighting the same codes, P0300 random misfires P0303 cyl #3 misfire P0304 cyl #4 misfire I tried many things, including a new oem crankshaft sensor last week, no luck. They have been re-designed by GM to correct the problem of they shrink over time, do not seal when cold, then seal when warmed up. I have replaced All spark plugs, High pressure fuel pump, thermostat and housing. So suspect the injectors. mercedes forum at Car Dealer Forums; Perhaps some of you can help me in solving this puzzle. Engine runs fine when restarted hours later, problem is cold start in the morning. The idle will be perfect. 7l 4cylinder that is throwing P0304 (#4 cylinder misfire) ONLY when cold (less than 150 degrees). Engine misfires when cold but runs fine after warming up few minutes later? My 97 SLS used to belong to my grandparents but old age and another car; they gave it to me. Starting misfire/missing from engine. Now it's every time I start the car while the engine is cold. Intake manifold gasket, this can leak to single cylinder, cold start misfires that usually only happen after sitting overnight and at temps below 50F. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Page 1 of 2: How to Test a Misfire Problem (Ford 4. 4 rough idle when cold Have a 2004 F150 when fist start up in the morning after the rpm comes down I get a rought Idle but as the engine gets warrm the idle is smooth. Seems to smooth up when the truck is warm and RPM is over about 1200. It clears up when the engine is warm and its smooth as silk after hot starts. I'm going around in circles with this misfire, one cold starts she has a very rough idle - starting at around 1000rpm after a few seconds she bounces around 700rpm; this is when the misfire is very apparent. Loss of spark is also a prime suspect in engine misfire. It was only in 1 cylinder, and when I switched around the wires and plugs, it didn't help. Once the fuel injector is turned off, the cylinder is now basically an air pump, which reduces the potential for catalyst failure. Every cold start results in a #5 misfire. This is a one-stop shop for our team. An owner may complain of misfire or roughness during a cold start. I have spent quite some time searching the forum to make sure that im not asking a retarded question that has already been answered too. 0L misfire when cold? 6. My first recommendation would be to have the Check Engine light scanned for the code it has produced to ensure that a misfire is the. Typically it would misfire enough to throw a CEL, resulting in fuel-cutoff to that cylinder - a re-start would usually cure the problem. So here is the issue that I am facing with my car, every morning when i start the car it misfires until the temperature becomes adequate. The hardest to diagnose is an intermittent miss. Namely, after starting the turn number is decreased, there is uneven exhaust and smell of unburned fuel, the engine starts to «misfire» , and as the engine warms up, the vehicle starts to work smoothly with no visible signs of engine problems. Intermittent misfires are the worst kind to diagnose because the misfire comes and goes depending on engine load or operating conditions. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 8. Volkswagen, Audi, Mini, Rough Running when Cold , Misfire and Check Engine Light 2009 VW Tiguan 2 0 Turbo misfire cylinder 1problem - Duration:. This misfire problem will be random - not cylinder specific. After it reaches normal temperature it straightens out somewhat, but not completely. But is zinc an effective treatment in beating those common-cold zombies out there? Read on to learn five ways zinc may be on our side when it comes to colds. " If it still misfires under acceleration or at higher speed with richer mixture, then it has to be a spark problem. Sometimes it will start first time but it feels like the engine is struggling. 0L misfire when cold? 6. The engine may only misfire and run rough when cold but then smooth out as it warms up. Ignition coil 1 circuit poor electrical connection. We're not talking about a knocking engine or one that idles rough or stalls. 7 limited 62000 miles. Suburban Car Forums. A complete driving cycle can be done in under fifteen minutes. Any one with thoughts. I have been fighting the same codes, P0300 random misfires P0303 cyl #3 misfire P0304 cyl #4 misfire I tried many things, including a new oem crankshaft sensor last week, no luck. The misfire is causing the hesitation; you just need to find out what's causing the misfire. Thanks for help. Post Reply. The problem I am chasing is a misfire and cruising at steady speeds. evening i have just purchased a combo 1. Recently it has developed a misfire upon start up, about 2/3rds of the time on cold start. Intermittent misfires are the worst kind to diagnose because the misfire comes and goes depending on engine load or operating conditions. Misfire is a lot more likely to occur after the engine reaches normal operating temperature but I have witnessed cases in which a misfire could only be detected during cold start conditions. After a short ride, we stopped for her to get gas. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 8. does it make sense that a leaking intake gasket would only leak when the engine is cold? would warming up the engine cause the leak to stop and the engine to run perfectly? or is this misfire when cold more likely due to maybe a bad engine temp. Converter restrictions are often caused by severe overheating that damages the honeycomb. First few years ran great, last couple years it starts misfiring once it's warmed up. on February 07, 2017. Unless you live in a very cold climate I don't recommend replacing the cold/hot intake air valve and plumbing. It misfire starting from cold. I'd agree to the MAP especially when you say misfire on acceleration which is a real symptom for this, however you major on cold start being an issue which would make me suggest you look at the CSV. Engine misfires when cold but runs fine after warming up few minutes later? My 97 SLS used to belong to my grandparents but old age and another car; they gave it to me. Symptoms of a Misfire. Drivers of some cars experience a flat spot when accelerating which could be described as a momentary hesitation from the engine after the accelerator pedal is pressed down. The truck runs great at operating temp, & i can only duplicate the problem after it sets all night. VW MKIII-A3/B4 TDIs. But before you replace the converter, keep in mind the possible reasons for it failing in the first place. When the car is cold I have to leave it idling or hold the revs at 2000 for at least 2 minutes before i can drive the car. Common cold prevention is sometimes as simple as avoiding people who have a cold, especially during the first 2-3 days that symptoms like a sore throat appear. Q: My car has a misfiring problem when completely cold. I replaced EGR and plugs, dealer tested coils said they are fine. 0 Ecoboost SEL AWD 5,400 miles. I looked at the freeze frame data, the misfires are occurring right at cold start (within 5 seconds of starting). also when was the last time you changed the plugs and properly gapped them. Latest event; cold start generated misfire, rough idle and check engine light. Generally, a misfire will trigger the engine check light and the truck's exhuast will smell like gasoline. Now, the past 3 days, the car clearly runs on only 3 cylinders, and as it warms up the last cylinder slowly misfires less and less and then comes fully online. Anyone elses car misfiring with colder weather and having One Step Colder spark plugs? I've started to notice my car started to misfire under hard. The misfire may be due to a recent ejaculation, or chasing an orgasm way to soon. It's strange because it doesn't happen 100% of the time - only most of the time. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car. Old oil in the firing pin channel may slow the firing pin velocity. I had same symptoms and issue, cold engine with misfires, warm engine with no misfires. Thanks in advance guys. Intermittent misfires are the worst kind to diagnose because the misfire comes and goes depending on engine load or operating conditions. I am also having a similar issue, my truck will idle rough and misfire until warm, truck runs fine after about 1. I am getting a cold start misfire on my 04 honda pilot for several months. The spell only lasts for a minute tops the colder it is outside the longer it lasts. i have a 1989 lx sport with 140,000 on the car, i bought it in 2001 with around 92,000 on it. I have a 2000 taurus with the 24v Duratec which will not idle probably when the engine is cold - below freezing - it is not firing on all cylinders. What You Need to Know About Engine Misfires | Advance Auto Parts. Once the engine had warmed up, the misfire was gone. The only problem is the intermittent, and very noticeable, misfire at idle. most of the time it is running fine. This misfire problem will be random - not cylinder specific. 2 Direct and I get a misfire when around 2-3K revs in 3rd gear but only if its really cold outside, I can get up on a normal mild morning and no problems at all!. Misfire on Cold Start so recently ive been getting a P0303 for misfire on cylinder 3. Faulty ignition coil 1. My code reader however is showing red icons for EVA 02S CAT and HTR. My BMW/MINI engine misfires when cold. Local Ford Dealer said Piston Rings, I don't buy it. Has new engine new plugs wires injectors when starts misfiring can shut down start back up and runs fine until a few minutes then starts again. This is on the '94 Chevy W-4 wrecker, 5. I had a similar problem with my 2000 sts *star about rough idle at cold startup, then as engine warmed up it went away.