e46 cold start misfire

I think it just needs a major tuneup. It's easy! Heard of this a few times now,especially if the car has had supermarket fuel used throughout its life.. Just out of interest how did you diagnose the fuel filter in the end, or was it a case of "just try it" ?? Let vehicle sit cold. Work performed: replaced all 6 spark plugs, #1 coil and boot, swapped #1 and #2 fuel injectors, with no results. This category only includes cookies that ensures basic functionalities and security features of the website. Runs great when cold. no change. Or, why I hate cylinder 1. I would have thought that the BMW OPPS system will throw some light on whats going on. Every time on a cold start, when the engine is cooled down to outside temperature, I have misfire(s). this morning it developed a misfire, the car actually was missing. You may be talking of rough idling at cold start and not misfiring. if you stat it and drive away without letting it idle much or stat it hot it is fine. The car > runs perfect after it is warmed up. My BMW e46 always jumps on cold starts for a minute then clears changed coil pack and plugs and vacuum pipe to mass always code say cylinder 4 misfire could it be the injector . Lover not a Fighter. Did you try swapping coils to non-affected cylinders? Changed coils around, new coil boots etc. edit - but the problem was there hot or cold. it will only do this on cold starts when you let it idle, it dose not take long, maybe 45 seconds and it will start misfiring. When I bought it it suffered from a rough idle at cold start that vanished when it warmed up. And since it has already been mentioned, I would like to add. Only affects during cold start and idle! At idle: I don't have any other scanning tool, so it is the only test/reading I can get. Cold start misfires are almost always injectors. 2000 bmw 323i. One of my friends took his car to a quick sto... Scotty I just picked up a 2006 tundra double cab with 7... Answer to: Hyundai Tiburon does not crank if on jacks. I have also noticed that if I turn the ignition off when it happens, then back on again, the motor runs normally and the misfire disappears. Necessary cookies are absolutely essential for the website to function properly. But it sounds like an AFM problem to me.. Air flow through the meter needs to be monitered with diagnostics.. Could also be cam/crank position sensor(s),but usually they will throw a fault code.. What diag machine are you using to scan the car ? I changed sparkplugs (Bosch) somewhere around 13000kms ago, ignition coils also look okay, and I even got an ignition coil from another properly working e46 engine and tried swapping it with my 1st cylinder coil, but it didn't change anything. Source(s): https://shorte.im/a0OF2. Reactions: Jeffman. In what shape is MAF sensor? Greetings from Finland. BMW 3 Series - Tech Talk For All Gen Of 3 Series . would make sense though if the diag probe was reading rich when the car is cold and it ends up underfuelling. 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. I didn't notice as dealer had warmed it up everytime I went to see it. Both were done on a warmed-up engine. I have a problem with my e46 (m54). It was early oclock. Lv 7. the owner was in touch with a guy his m8 knows who's supposed to be the top m3 man around, he's havin a peek at it too, will have more feedback tomorrow maybe as he works in a bm dealer and has access to the workshop info system...interesting thing he discovered (which my launch didn't show) is that the ecu's history code memory was full, and he reckoned that this was possibly why there were no more faults showing, though i'm not convinced because as a test previously i disconnected the afm for a sec to see whether i was actually getting a fault code / cel - which i was, so we shall see how it goes...will post an update when she's running right! In saying that I've seen crank sensors fail the other way -ie they get hot and begin to break down - and not throw a code. Powered by Invision Community, Specialised Vacuum Equipment Consultant and Manufacturer. From cold start to warm start misfires. I tried swapping coils today, and the problem did not follow to other cylinders, so coils are okay. By But easily checked in live data....And the OP has already changed it. Cold Start Misfire. If misfiring moves to those, the coils are the problem. engine light comes on and reads #5 misfire pending. It gets worse during really cold periods and really rears its ugliness, last winter my car indicated some misfire codes during a cold snap below zero warming up the car, misfires on cylinder 4 and cylinder 1. BMW engine overheats; Poor acceleration; Erratic idle; Hard to start; BMW Service Engine Soon light may be on without any noticeable performance issues. I would have thought it had enough flow rate through the filter for normal running but when it needed to draw it rich when cold perhaps it just wasn't getting the flow signals from the engine management. Common Causes . Misfire after warm up. It was weird though the way it cleared when she was hot. But it really ran so well warm though, even under hard acceleration..oh well, every day is a school day in this trade!! CarKiller.com copyright © 2020 all rights reserved. So I registered to try and help. misfires on cold start. The issue related to cold start BMW M54 engine. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. My car has a manual transmission. The engine starts shaking and almost always throws a code for misfire, in one of the cylinders mention before. An M3 is normally a little rough at cold start. I had it at … Thought about cam sensor, but as u say u would normally expect a code. Hey, I have some reading from INPA hope those are alright. No joke. You also have the option to opt-out of these cookies. In summer it was not such big of the deal, because it would only run rougher for a while and that's all, but now in winter, it is a certain misfire fault code every cold start. The engine starts shaking and almost always throws a code for misfire, in one of the cylinders mention before. These cookies do not store any personal information. By Irish E28, June 7, 2010 in Other BMW Tech Talk. When the engine is warm or upon restarting, no problems whatsoever. Now sometimes you could drive it for 2 or 3 miles and it'll disappear and sometimes it could be 15 or even 20 miles before it runs right according to the owner - however i suspect this could be due to how hard it gets driven to warm up. Update, unbelievably all the trouble was caused by a fuel filter even the top M£ guy in the country didnt figure that!! Usually, they occur in cylinders 1,2,6 according to the scanning tool (INPA), but most often it is in cylinder 1 or 2. The car has already done 260K/km, it runs on 5w30 Bmw long-life oil. Another thing is that when it's warmed up and has code deleted, it runs perfectly fine, without even the slightest sign that something could be wrong. I'd imagine that was the case allright! dyezak Major. Thanks a million for the quick reply, forgot to mention we borrowed a known good AFM from another m3 as i was thinking the same myself and it made no difference, also tried its own one in the other car and it was A1. Shut it down and pull plugs, look for your soaked plug and that's your bad injector . Even though we have used a 2003 BMW 325ci to perform this installation, this article can be applied to any E46 3 series vehicle with the M52 or M54 six cylinder engine (with minor modification), including the 323i, 328i and 330i coupe, sedan and convertible. I have a problem with my e46 (m54). forum.bmw5.co.uk Any misfire would cause a check engine light. Sometimes, after the engine warms up a bit, and I restart it, the code disappears by itself, other times I have to delete it myself. https://cdn.autodoc.de/thumb?id=7759185&m=0&n=0&lng=nl&ccf=94077798 Work performed: replaced all 6 spark plugs, #1 coil and boot, swapped … Has the lambda operation been checked on live data ?? Another thing is, if I manually keep revs at around 1300 for a while until it warms up a bit, the engine won't throw any code. I'm using a Launch X431, update is only about 6 or 8 weeks old so should be good for an '01 car. the car seems not be to happy as normally driving i can feel it not idling right. 0 1. I had a y2000 E46 320 2.2 which had a similar sounding thing to yours, only mine was completely random and not just when it was cold. Sometimes, after the engine … But opting out of some of these cookies may affect your browsing experience. Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders. Usually, they occur in cylinders 1,2,6 according to the scanning tool (INPA), but most often it is in cylinder 1 or 2. I've seen a few landcruisers and avensis d4d's at the same thing now you mention it! The cold start misfire is often associated with malfunction of Mass Airflow Sensor (MAF), so firstly check this part. These cookies will be stored in your browser only with your consent. After cold start, it takes around 30 seconds or so to begin the cyl misfire. If left to idle the engine will flag up 'misfire cylinder 5 with fuel cut off' - the engine can be heard going into a rough state . 01 E46 M3, 95k on the clock. Hi just looking for a bit of info here, weird one in during the week . i switched off and restarted and the mis was gone. checked lambda sensors in live data and all seemed to be ok...but again the slowness of the launch could be a factor here too. this morning it developed a misfire, the car actually was missing. See also: E39 Bestlinks & … May 4, 2017 1,768 1,515 0 Plano TX Ride 335is Nov 22, 2017 #12 Bmwfixerguy1 said: Cold start misfires are almost always injectors. Irish E28, June 7, 2010 in Other BMW Tech Talk, Hi just looking for a bit of info here, weird one in during the week, no fault codes, coils replaced along with genuine plugs (€120 for 6 ) and also coolant temp sensor, when she's cold its almost undrivable, misfiling, flat spots, generally low on power - almost to the point of stalling, gradually improving until engine temp is around 83degrees and oil temp is around 98 degrees and then she goes like shit off a shovel. I have a bmw e91 2010 lci n43 engine. Any info/help would be greatly appreciated, thanks. It really is a bit of a head scratcher all right! Hey uncle Scotty! Every time on a cold start, when the engine is cooled down to outside temperature, I have misfire(s). Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. i switched off and restarted and the mis was gone. BMW engine misfire; BMW won't accelerate; Stuck in limp mode; Engine shakes at idle. By clicking “Accept”, you consent to the use of ALL the cookies. Start and let run for about 45 seconds. :thumbdo: Normally happens at least once a trip and usually lasts about a minute or two and then runs normally again. Sign up for a new account in our community. nothin worse than a headwrecker like it to keep a man awake!! 1 decade ago > trouble codes and came back with a random misfire code. on cold start there is an engine rattle, if i put my clutch in the sound goes away (yes i have a manual 330i E46) or i keep the rev's up till the car is slightly warm and no sound. on cold start there is an engine rattle, if i put my clutch in the sound goes away (yes i have a manual 330i E46) or i keep the rev's up till the car is slightly warm and no sound. no fault codes, coils … or would that give me a dtc relating to timing? My E46 330i has an intermittent misfire. Remember that mechanical tolerances for an M3 is a little on the loose side. My AC's fuse keeps getting hot and it... Hey uncle Scotty! You are very smart. I know it's a M50, but when the cam sensor went on my Sport it didn't throw any codes whatsoever. You need to be a member in order to leave a comment. No nothing unusual really in live data - mind you the launch can be a little slow in reading so its possible its not being picked up. Any feedback is appreciated! 2000 328i E46 miles:105K- Code P0301 #1 cyl misfire after cold start thru initial warmup. Cylinder 6, very rarely. Recommended Posts. We also use third-party cookies that help us analyze and understand how you use this website. Sounds like a dodgy temp sensor to me, giving incorrect fuel mapping until warm. This is such a weird problem. Anyways My car is 2003 330i Auto and has a similar issue however the misfire is only for about 30 seconds after a dead cold start. I also tried to clean it with MAF cleaner, but I didn't notice any big difference. Does not happen with cold start. My car has 94000 miles. 2000 328i E46 miles:105K- Code P0301 #1 cyl misfire after cold start thru initial warmup. There are hundreds of problems that may trigger the check engine or service engine soon in a BMW. Do you have a scope for checking lambda/sensor operation ? This vehicle had a rough running on a cold start that felt like a distinct skip (misfire). My MAF is in this shape, and it is a genuine BMW OEM part. It is mandatory to procure user consent prior to running these cookies on your website. INPA chart showing cylinder works. Bmw 320i e46 2002/misfiring. Irish E28 0 Irish E28 0 Member; Members; 0 323 posts; Location: Ireland; Occupation: Motor Mechanic, owner of a small garage; Report post; Posted June 7, 2010. This does not happen if I just drive the car immediately after starting up. It addresses the most likely causes of misfires. Let vehicle sit cold. the car seems not be to happy as normally driving i can feel it not idling right. Whenever I accelerate from 1,500 to... RE: Poured wrong coolant into newly-purchased car. BMW Mini Cooper-2016 Year model Drivetrain malfunction. Anyway car was sold a few weeks after we got it sorted and replaced with a Jag XF diesel, nice!! Cylinder 6, very rarely. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. E46 M3 misfire when cold. From what you wrote I assume there is a leak present. Can you see if it has any unusual data when the fault is occuring ? The variant when the banal air leak between the head and intake manifold plays a key role in misfire phenomena. This website uses cookies to improve your experience while you navigate through the website. Repair Summary The following article gives detailed instructions on performing a rough idle repair on a BMW E46 3 series car. I take itthe launch has a live data display or flight recorder ??? Cheers for al the input that time lads! - Single-cylinder misfire diagnostic procedure (intermittent or constant, cold-start or warm) - Multi-cylinder misfire diagnostic procedure (intermittent or constant, cold-start or warm) PLEASE IMPROVE SO ALL BENEFIT FROM THE EFFORT! What's a normal alternator charging v... Hey yall ive got a 2006 durango with the 5.7L and this ... Hey uncle Scotty! My reason for posting though is I thought I'd share the following link with you in case you haven't come across it as yet. 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. That is one of the reasons an M3 can "free rev" to a very high rpm. vanos problems maybe? https://cdn.autodoc.de/thumb?id=7759185&m=0&n=0&lng=nl&ccf=94077798, Chrysler 300 2008 misfires on cold start while ideling, BMW Z4 2008 3.0i ABS, BRAKE and DTC warning lights. On cold/moist mornings, the engine starts to shake after a while on idle run or if you start driving, very soon you'll lose power and get an engine misfiring signal. The idle smooths out if I push in the clutch pedal or give it a little gas, and once I start driving it doesn't come back until I shut the car off and restart it. He replaced the AFM and at this stage cant really remember what else but anyway she's sorted! My indie shop did a smoke test a while back but didn't find any leaks.

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