E46 misfire at idle. Don’t be afraid to replace it.

E46 misfire at idle The following codes were detected: P0313 P1349-4 - fuel cut off P1351-5 Misfire P1345 The misfire is only at idle though, maybe there's not enough pressure to push it through the cat at idle? Here is what I have done to fix the problem with no result E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Tags 323i e46 header misfire rough idle. Hi, recently I’m experiencing some misfire issues with my 01 e46 320i. Car seemed fine at highway speeds and didn't notice power loss. The misfiring took place while driving, around 40 mph. Rev the engine to 3,000 rpm for 30 seconds and watch the short-term fuel trims. There are a TON The issue is that my car usually has a rough idle, but the biggest problem is that sometimes, while idling, my car randomly switches from 6 cylinders to 5 or 4! My problem After disconnecting MAF, there is no engine light, error for MAF is present in inpa and the engine runs in idle without any problems! I have just ordered both MAF (VDO) and O2 sensors Misfires across lots of cylinders points to leaks or sensors. E46 Fanatics Forum is not in any way I can feel when it happens because there's a complete cutout of power, and the vibration is noticable. Could this be causing it? “Speed has never killed anyone. I just replaced my fuel filter (which was indeed very bad) trying to solve the issue. -thurs, get a ses light but car runs fine thurs and fri. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by If you have the misfire codes or lean fuel codes, rough idle, etc, get yourself a fuel pressure gauge and hook it up to test the fuel pressure after the Regulator, if it isn't at the recommended pressure at idle, your Fuel Pump I'm having cold morning start rough idle with misfire on cylinder 5. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. 5-4 P1134, P0300, P1350. The idle at normal operating temp can be fine and then it can be uneven, the Random cylinder misfire at idle after reinstalling stock headers. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada it had misfire cylinder 3 fault and when you start the car it is rough idle start shaking and you hear clicks A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Considering I'd replaced all the spark plugs last year (about 8,000 miles ago) and new coil packs on the #1 and #5 cylinders, I wanted to try and determine if it was I had similar misfire codes and rough idle on my 335i. Tags 323i misfire. These are all the things I have replaced or checked: spark plugs, coils, ccv, icv, maf, disa, replaced all vacuum lines, compression test, not a head gasket issue, injectors. Content on E46 Fanatics Forum is generated by E46 bmw's tend to have missfire/rough idle issues in colder temperatures, it's a common issue. Come join the While sitting idle the misfire does not disappear but if it***8217;s being driven the misfire is intermittent. It seems to come down a bit when reving but goes right back up at idle. Now I get an occasional misfire (only in cylinder 3, normally after a long drive). Turning engine off and back on resolves the issue. The thing that troubles me in trying to diagnose this is: How intermittent it is. Need to know if any of your codes were P0171/174 along with the misfires. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG Rough idle, misfire, fuel cutoff, and lean codes. As mentioned, INPA is really not the best or easiest tool for driveability problems. M4. Jump to Latest 21 - 33 of 33 Posts. The codes I get are cylinder 1,3,4,5,6. Checked the intake boot and air lines for vaccuum leak but looks good there. Once it misfires, it continues until I restart the car. when i picked the car up, it appeared to have a random intermittent misfire at idle. Im assuming this is from the catless headers. The idle was rough going up and down so I read the diagnostic codes which said misfire cylinder 3, 4 As the topic states, 2001 E46 325i M54 Touring, 284 000km on the Clock, has Random Misfires at Idle ONLY and a light PING when car is Fully warmed up. :/ I'd really appreciate the help. Even to the point the SES light will go out on its own cruising down the highway. I either have to put it in gear and drive right away, or if i'm sitting around waiting for something or someone after a cold start, i have to manually keep the rpm around the 900-1k mark for a few minutes till the temp gauge gets to the middle of the Update 4/18/24: Car was dead. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! Normal/Expected doing what the system is designed to do. 69. M54B25 engine misfire at idle/low revs with lean BMW E46 Misfire Rough Idle Every Possibility For M54 M52tu Engines Strange issue on my 04 M3 after full engine rebuild with many new parts, engine cranks, starts, rough idles bouncing sounding like it's an old carb'd V8, might smoothen out just a tad, then after about 30 seconds or so eventually dies/stalls. If I do not allow it to misfire in the next few drive cycles, the SES will clear itself. I replaced the spark plugs and then decided to take it to the dealer to diagnose the misfire. once E46 M3 Misfire / Slight Power Loss. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope The car always stores both banks lean air mixture faults, and then it will store cylinder #6 misfire (which I can feel as a singular misfire occasionally on cold starts), and if codes left long enough uncleared (a week or so), all cylinder misfire codes will Problems - The check engine light came on and I had it checked and it said it had a misfire on the #4 cylinder. E46 erratic idle and stall. I think the lean condition created a misfire and now it's even worse. It has a cylinder 5 misfire on cold start, and is worse in cold weather. with a rough hot idle, but only when it is at full running temperature. Misfire of some sort on all cylinders. Cylinder 6 misfire code (P0306) shows up when idling for longer than say 2 minutes, cold or hot. Cleared the code and about two weeks later it came back - same code. This seemed to make the problem less severe but the issue still persists. I am not sure if this is related to the cylinder 5 misfire though. also car will shake sometimes in idle 2011 328i Rough Idle/Misfire. Don’t be afraid to replace it. Cylinder 6, very rarely. 91 and LTFT -4. How did you diagnose bad injector exactly? High chance you will need to put it back in later. Not E46, but 2000 Z3 2. Last fall the winter the check engine light came on with misfires and fuel cuts on almost all cylinders plus the lean codes of 171 and 174. Turning the car off and back on fixes it somehow. Was getting a mysterious misfire at idle. com MaxiCOM Scanner used in the video: https://amzn. My car had the same symptoms as yours, it had a rough idle occasionally and the ses light would come on during cold starts. Especially, on the first start of the day. Jump to Latest E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. The code 1193 is a fuel trim code. Thread starter sihlem; Start date Feb 17, 2021; Tags #bmw #mpower #e46 bmw e46 m3 vanos S. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG A low idle speed/ misfire could also be the cause of the oil light coming on. What I have done to the car:-I was running a Oil catch can, but now back to a new CCV. What are the important PIDs at hot idle? A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. only had information for cold starts has morphed and has almost everything you would need to figure out the common E46 misfiring Car: 2005 E46 ZHP Symptoms. It went away after a day but yesterday cylinder 6 misfire came up and then about a half hour later it went away and was replaced with cylinder 5 misfire again. The hoses in mine was like that when I had almost similar problems a couple of years ago. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Misfire at Idle. I'll pull things further apart when I get back home this afternoon. No cylinder 2 misfire Swapped 1 and 2 coils. May I ask the general community this question: Q: Is a BMW E39 "rough idle" the I have replaced the MAF sensor and cleaned the idle control valve with carb cleaner and it operates freely without getting stuck, but still misfiring at idle. Usually coils and plugs tend to misfire when hot. E46 Always assume vacleaks first on e46 plattform when dealing with misfire, esp if it moves around. At 2. Advanced Search Cancel Login / Join. 5yrs it has been driven 12,000 miles, got the car in 2016 with 95k miles it has 107k on it now. If they reduce significantly, might even go negative, then it is confirmed that you Multiple cylinder misfire/rough idle/loss of power. After couples minutes it'll be normal again and so on E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Stop light is not long enough, so more like when I’m idling and waiting for someone. Smoke test was performed and no signs of vacuum leak anywhere. Codes remained the same. 2 weeks ago the car started to misfire under load engine light came on. plugs, coils, injectors + o-rings (due to consistent misfire in cyl5), fuel pump, VANOS seals, vacuum lines, this is my 2000 328i every morning when i start the car cold, if the temp outside is between 30-50degrees, the car will misfire and the idle will drop a few times and stall as soon as temp mark hits the end of the blue zones. It gave a rich condition. Not a single no start, misfire or a problem with my wife's E46 so far this season except for the one day I had to move the The Car starts and idles however it has a slight misfire. E46 Fanatics Forum is not in any way affiliated with If it doesn't misfire in the first 60 seconds, it will not misfire at all. Misfire Codes ( Using Delphi ) Regional Forums. 5k rpm, the value was at 18-25. -wed night, fill up tank from 1/8 tank on my home from work. - E46 (1999 - 2006) > rough idle at stops Since I'm not sure whether 'rough idle' equates to 'misfire' in people's minds (it does in mine), I was hesitant to point the user to this thread. This morning I checked the codes and cylinder 4 misfire is the only code. Misfire is worst at 1500RPM and will gradually be less prominent until around 3000RPM and after that barely noticeable. Content Misfire, cylinder 3, misfiring with cylinder cutout (Misfire CARB_A) Misfire, cylinder 5, misfiring with cylinder cutout (Misfire CARB_A), misfiring during warm up, worsening emissions (Misfire CARB_B1) the secondary air system codes did not recur. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. On my way home the car drove smoothly until I had to stop at a red light. This could be random chance. now i have a misfire on cyl. What brand/weight of oil was used for the oil change? It could also be the oil is too thin at operating temp, most 5w-30/10w-30 oils are not thick enough to meet the BMW specifications. The BMW Tech I appointed has now advised to have the Ecu unit repaired as it is not sending spark signal to the number 2 spark plug. Or I'm just saying it because I've been having a similar issue with my car but it actually threw misfire codes in all 6 cylinders at random occasions but the car always ran fine, apart during winter when the idle would bog a bit then stall out until it was hey guys yesterday i check my oil and realized it was a little low so i topped it off. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Car rough idle and stuttering - but only when cold Bimmerpost ☰ Model Selection. When the engine is warmed, it does not misfire or produce SES at idle or otherwise. . I checked the intake tube again and it seems to be ok. Does it all the time. on the E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. There is no loss of power, the car I have been experiencing a misfire that only occurs when my car comes to a stop during idle after reaching optimal temperature. if its below 30degrees and really cold, the car does not stall but does misfire a few times where the idle drops. Very strange. It's only cylinder 5 I'm having misfires on. I have never had debilitating rough idle issue in the many years that I've own my E46, but have only So I have a 2003 330ci with 175k miles and recently I’ve been having misfire with fuel cut off only at idle. It works normally when driving. Most likely you have carbon buildup or injector issues (or 2002 E46 318i N42 Rough idle. They will tell if -Very rough idle, RPMs pulsing up and down like crazy P0313 Misfire detected with low fuel P0300 Random/Multiple Cylinder Misfire Detected P0171 System Too Lean (Bank 1) E46 330CI DIY Mods: Hawk HPS 5. p0300 misfire p0301 mifire, cylinder 1 P1344 Misfire During Start Cylinder 2 P1346 Misfire During Start Cylinder 3 P1348 Misfire During Start Cylinder 4 P1350 Misfire During Start Cylinder 5 P1352 Misfire During Start I have a problem with my e46 (m54). Reply De5tr0yer_HR 320i M54, 330i, M3 Rough idle, misfire only during acceleration. Tags 318i idle n42 rough. Jump started. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Start it up and it will misfire like a vacuum leak. Make sense the e46 uses a different, older protocol compared to much newer f models 2008> Try the e option My e46 (2003 325i) had a cylinder 5 misfire a few weeks back. Tags idle m54 misfire rpm drop. When the CEL comes on, I'll turn the car off and back on and it will go away. 5k rpm to idle, the trim would stay 0-2 for about 20 seconds, then randomly go between I've been having rpm stutter (small misfire) at idle and on cold starts. Bought the car two weeks ago, at the time it was running terribly with rough idle and misfires. I replaced it with an OEM two-part hose, so to read of it now being one part is Posted by u/batmanstimpy - 2 votes and 6 comments E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Common culprits: Vacuum leaks, faulty injectors, coils, just to name a FEW. i replaced the crankshaft position sensor and now the car still has a rough idle but is now throwing p1083 and p1085. But cruising down the highway its fine. Read through this misfire guide. 325td rough idle and stalling probs. It's usually #3 misfire with fuel shut off. Content on E46 Fanatics Forum is generated by its users. Thought it would be the MAF - so I replaced it with my friends MAF to see if there was any difference. Howdy Boys (and Girls) I've had this issue with rough idle on cold starts (usually when the RPM starts dipping down). I have new NGK laser platinum plugs, new oem Bosch coils, used oem injectors with low miles, new VDO fuel pump, new oe fuel filter. curious, what kinda scanner are you using? if the #4 misfire returns, try swapping plug and coil with another cylinder and see if it follows. From what i've read, this is a problem. Its only when I come to a standstill in traffic, and within 10 2002 E46 325ti *UPDATE* found source of lumpy idle/misfire. If your getting a specific cylinder misfire, try swapping the coil with another cylinder and see if the misfire moves to When it gets bad it causes P1071/P0174 codes and also various misfire codes like P0303, etc. Jump to Latest Can also hear it at idle if I put my head by the rear wheel. Suddenly becoming stationary, that's what gets you. E46 Fanatics Forum is an Slightly Hot + Idle Hunting + Misfire = Vacuum Leak? A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. E46 Misfire and lean Codes! Hey guys, I drive a 03' 330i and it has been running great for a while now. This leads to slower acceleration or brief loss of power in the engine. Ran hot idle decided to check fuel trims. This is what caused the check engine light and O2 sensor fault and misfire codes. This will cause idle fluctuation and cruise control not to work. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren I started the car again, rough idle, misfiring, shaking like crazy. I've been doing a lot of reading and YouTube watching on the common rough idle and P0171/0174 issues that plague our cars and I think I won't have a problem fixing an issue when it becomes persistent. I did do a fuel pressure check and it was dead center 50 PSI at idle and I 2001 E46 M3 Rough Idle / Shaking. whenever I drive the car down the highway the 35 - idle speed actuator (open) EE - misfire, cyl#1 EF - misfire, cyl#2 F0 - misfire, cyl#3 F1 - misfire, cyl#4 05 - fuel injector, cyl#2 06 - fuel injector, cyl#1 E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Usually, they occur in cylinders 1,2,6 according to the scanning tool (INPA), but most often it is in cylinder 1 or 2. None present/none pending. With cylinder 5 misfire during start. The car wouldnt stall, it would stumble, just like a small jolt. Injectors-- if an injector is clogged, it M54B25 engine misfire at idle/low revs with lean + misfire codes. Drives perfectly, is very good on fuel, and has plenty of power, and once running at more than idle speed, has no signs of misfire or rough running. 0 posts · Joined 2023 Add to quote; Only show this user Cylinder 6 Misfire! Rough Idle. 8L with the M52TU. ” (Jeremy Clarkson) My car has rough idle only on cold starts until the engine warms up (lasts only 30 secs until the critical warmup). Read code P1349 misfire cylinder 4 fuel-cut off. If they are new, move them IF the misfire doesn't follow the coils. And boom no more misfire, i havent cleared the dme code, i was Took care of the erratic idle I had. I changed my spark plugs but the problem is still there. Thanks. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada E46 M3 unexplained misfire. This car doesn't use a knock sensor to detect misfires - it only uses the knock sensor to retard timing if needed. Content on E46 Fanatics Codes: P1349 - Cylinder 4 misfire with fuel cut off P0300 - Random/Multiple Cylinder Misfire detected (I assume this is because more than one cylinder has a fault code or means the car knows there are multiple misfires but can't determine the cylinder) P1351 - Cylinder 5 misfire with fuel cut off 2004 325ci (M56) automatic Codes: P0171, P0174, P0305, P0306, P0304, P0300, P1449 Symptoms: Rough cold start idle and exhaust chugs like a muscle car at low rpm, rpm flutters in Drive at low rpm or at a stop. misfire with fuel cutoff on all except cylinder 5; Misfire during start. listed below are the codes Car drives perfectly fine but when I let it sit at idle it will develop the misfire on 6. If I'm driving and don't let the revs drop below 1k everything's fine and the car runs well. I have check all the hoses and the air intake boots and there are no leaks. The engine makes a bad noise under revs. E46 Fanatics Forum Misfire codes and rough idle. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG VerticalScope Inc. Come join the discussion about M performance 2742 dme: misfire, cylinder 1 2746 dme: misfire, cylinder 2 2744 dme: misfire, cylinder 3 2747 dme: misfire, cylinder 4 2743 dme: misfire, cylinder 5 2745 dme: misfire, cylinder 6 2892 dme: misfiring 274E dme: misfire at several cylinders 27cc dme: dmtl: leakage (new) My 325i has just thrown an EML with lean codes on both banks (0171 and 0174) and a general misfire (0313). , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Let me more specific, I noticed my car had rough idle with engine light on problem some time ago, a scan tool gave OBD II codes P0300 P0303 P0304, I swapped Coils and Spark plugs around, misfires always at cyliner #3 & 4, next things I did including seafoam, throttle body & idle control valve clean, the problem still there, then I noticed the problem described in my Hey guys, I recently purchased a 03 E46 M54 and having trouble diagnosing a cylinder 3 misfire ? Thing is its only at idle below 1000RPM, after that its smooth as butter. If I come to a robot and stop for a while, the P1353 - #6 misfire And usually P0300 (or something) General multi Misfire. If you haven't already smoke tested your car it might be a good place to start as rubber and plastic parts tend to leak after 20+ years. An engine misfire at idle can When the misfire / rough idle occur, the car shakes, sounds awful and sometimes sputters and dies. 1 E46Model Year: 2000 - 2006. A E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Come join the discussion about M performance, turbo kits, engine swaps E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View Hi there, new here, I have a E46 330d, 204bhp engine. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! P0313: Misfire Detected with Low Fuel P0444: Evaporative Emission Control System Purge Control Valve Circuit Open P1351: Misfire Cylinder 5 With Fuel Cut-off P1351: Misfire Cylinder 5 With Fuel Cut-off This was done at about 4k in 3rd gear, WOT. I’ve gone through the various forums about the symptoms of the running lean misfire P0171 & P0174, and the possibilities of it being a vacuum leak and so on. so i went ahead and bought a new coil. Check the fuel trims, if you are running rich perhaps I would ask someone to do a smoke test. Does the idle putter and bounce? Have you scanned the car for codes yet? Save Share E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. a week ago. (P1347) **Misfire on cylinder 3 with Fuel cutoff the last 2 triggered lights**. When the car has its LOW Idle, after idling for about 2min, It picks up a Misfire and engine Knocks like crazy. (my next plan is to pull the coil and E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Misfires are detected by the DME and the crank position sensor; the DME assumes that a fired cylinder will do a certain amount of work in a given time, if the CPS doesn't report that the expected work was done, then the DME records a misfire. E46 Fanatics Forum is an independent BMW The maf is a tad high maybe, 3-4 g/s is normal on hot idle, so id say its close enough. 5k rpm, the value was at 18-25 still. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Replaced Plugs = Misfire on all cylinders Replaced Coils = Rough Idle Replaced Disa (Dirty and flap a bit shaky) Replaced upper intake boot (hole in it) E46 Fanatics Forum is not in any way affiliated with Bayerische E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. if you have no change in the engine idle, then there is likely a crankcase air leak, could be valve cover, could be CCV hoses or something else. -sat, starts misfiring badly thirty minutes into a drive while sitting at idle, runs good when on throttle. Felt like a vacuum leak or coil misfire. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG Car only seems to have a misfire on idle, doesn’t sound like it has a misfire when I rev it. Weird Intermittent Misfire at idle Hi guys, I have a e46 330i manual 2001. E46 Fanatics Forum is not in any way The only codes that ever pop up are misfire codes, and when I clear them they go away but sometimes when I’m in that 2500-4000 rpm range it will sound stuck or clogged and a misfire code will pop back up. What's New; Forum Listing; E46 General. By tsylatac in forum New England - US Replies: 7 Last Post: 07-17-2009, 07:15 PM. So far I've replaced plugs, coils, fuel pump/ filter, o2s, had spare injectors and threw them in, the 2 caps and hoses which were broken on the back of the intake which made the car run better but still misfires after a while. No relevant codes thrown except for occasional misfires and VANOS exhaust, not consistent; I think these are caused from the oxygen sensors have proper AFR under load and idle; coils are brand new; has proper oil; comp test, all cylinders at or below 160-170 (Autozone comp tester, prob inaccurate) fuel pump fine; Tends to do it more when I start Rough Idle/Misfire Only After Stopped. If any are > 8% then you likely have a vacuum leak. Jump to Latest 636 views 1 reply 2 participants last post by ap46 Apr 12, 2023. Jump to Latest so now i still have rough idle, cylinder 3,4,5 misfire randomly and periodically i will get p1189 which is a fuel code. Your MAF is reading low at Idle and is likely a big part of the issue. EE/B6 - Misfire, cylinder 1, misfiring during warm up, worsening emissions (Misfire CARB_B1), misfiring at operating temperature, worsening emissions (Misfire CARB_B4) E46 Fanatics Forum is not in any way searching for zen bluebee, i am aware of your thorough checklist for diagnosing misfire errors. At this time, there is no misfire and the idle is almost smooth, with small hiccups here and there View attachment 976320 A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. 0, Painted Calipers, KONI Yellows, MeyleHD RTABs, MelyeHD Control Arms+FCABs, Motor & Tranny mounts, UUC EVO3 SSK+DSSR, UUC Sway E46 Forums. I went to my local mechanic to check the codes. O2 sensor has been changed along with new spark plugs, coils, valve cover, ICV, and fuel filter. 1999 BMW e46 323i ( Misfire ) Jump to Latest With a hot engine at idle, check the 4 fuel trims, 2 short-term and 2 long-term. Today #6 misfires. 1 code so i’m going to pop out the coil pack and spark plug and see if that is a a possible cause because i was messing with them before the last time i started the car. Replaced spark plugs and all 6 coils with NGKs and Duralast coils back in December after the car a developed misfire with fuel cutoff on cylinder 5. I replaced spark plugs yesterday but now don’t know how to approach Since the misfire Freeze Frame was at idle the problem is not likely ignition related. A few times, I've had it happen immediately after startup, at idle it's misfiring. Changed MAF and spark plugs and it did help a bit. By jtrawford in forum 1999 - 2006 (E46) Replies: 5 Last Post: 11-21-2008, 02:14 AM. 4 values in %. If it’s a rough idle, and your getting misfire codes than it’s not the Vanos, it’s from a misfire, so there are a few things that can cause that: coil packs, spark plugs, and fuel. E46 Fanatics Forum the cylinder 4 misfire should be looked in to, as well as the idle air control valve, it has to have free movement. Petroslav Petrov Discussion starter. Cylinder 5 is typically the only misfire with the occasional cylinder 1 with it (rare), which is why I leaned towards injector leak down since it tends to be cylinder 5 being the main culprit along with having an excessively rich mixture once in E60: idle issues, misfire. So why do we get lean conditions? If you get high trims at idle and low trims at cruising speed, then you likely have a I have an elusive misfire, rough idle and intermittent ses light once a month for about a day so far no one thread has narrowed my approach . So I haven't driven my e46 330 all winter (although unfortunately my new garage isn't finished yet so it had to sit outside) and just fired it up and to my dispair it wasn't running as smoothly as it did last time. I guess i fixed something. I have had one bad MAF. I haven’t noticed anything unusual on starting the car, ever. my next question is the throttle body sensor on my car. After a few times of this it clears up. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! Problem is as follows. The codes only appear during highway driving. Sometimes it’s misfire with fuel cutoff, sometimes it’s misfire on startup. I will also have to replace the E46 (1999 - 2006) rough idle and check engine light the cel stayed off and now ever since it started getting cold the same codes came back and this time it has a rough idle. When plugging it in to PA Soft i Along that vein, I noticed in the E46 forums today a 'rough idle' thread. Cleaned these and applied silicone conductive By far the most common cause of rough idle and misfire on these cars, especially when cold or at idle, is vacuum leaks. P1353 = Misfire Cylinder 6 With Fuel Cut-Off What this means is the misfire counter has incremented too many times, too quickly so the DME shuts off the fuel injector to protect the catalytic converter in the bank from over heating due because of too much raw fuel entering the exhaust. Not sure if coincidence. Content My idle is constantly rough but its on and off. Tags The E46 is getting on a bit, so all the rubber parts are always good to check first if any problems arise. Read codes and now two more codes on top of the P1349: P1346 misfire cylinder 3 during startup P1350 misfire cylinder 5 during startup thank you all for your replies and help, a plug next to the brake booster wasn’t in and that helped it idle and run. People other Go to e46 r/e46 • by When the limit is reached it start to cut fuel, causing a misfire. I looked under the hood and did find a bunch of holes and cracks in the lower intake boot, especially around the smaller diameter tube that goes into the engine. to/2rk6o9bIn Most E46 have an idle MAF reading of between 3. Look in scanner tool for fueltrims under livedata. had a very similar issue with my e39, m52tub28, dirty idle valve. Edit: PS - I have reviewed a few posts from here, and I've noticed on this forum, you guys focus on DISA, ICV, and Smoke-tests to resolve 99 E46 323i Auto 121K miles Hi, My car started to showing rough idle and multiple misfires (knocking) since yesterday. ” The idle was rough going up and down so I read the diagnostic codes which said misfire cylinder 3, 4, 5 and also Fuel Control mixture. G82Model Year: 2021 + Previous Generations; That's way to costly for something that isn't that hard to diagnose. Jump to Latest Rough idle Hi I have an n42 motor that is very erratic idle at cold for the first 20 seconds and then smother till warmed up (misfire/backfire once or twice at first start when below 12c deg). Most of them say misfire detected in cylinders 1-5. sihlem New member. Had an extremely persistent random rough idle about at all RPMs, cold or warm. But the engine is running like crap rough, no power, slow rpm increase when pressing the gas Sounds like a misfire. Then, after a while it started displaying more misfires/juddering on idle, once it was given a bit of throttle it would clear up and be fine again. Feb 17, 2021 #1 Hey guys So I have encountered a problem with my E46 M3 where it misfired once and never again but I can feel that when idling that there's a weird drop every 5-7 seconds. All have dropped. Out of nowhere the car shakes pretty good at idle and has a large loss of power when driving. Still misfiring at idle. Doesn't matter if its hot or cold. I’m almost certain this car doesn’t have any vacuum leaks now. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by After changing the plugs and fuel filter it'll only misfire at idle intermittent but when the engine is under load it stops misfiring but back at idle it'll still misfire. These 2 codes are generally a vacuum leak and can be caused by a TON of things. The e46 is probably a e-body in those options. I trust that if i proceed systematically through the steps i will indeed solve my multiple cylinder misfires (that at present are For misfires, the first diagnostic is to move the offending coil(s) to see if the misfire follows. E46 Fanatics Forum is an independent BMW enthusiast website owned and Misfire starts when the car is on idle for like 5 minutes. I get the rough idle all the time, but yet the check engine light doesn't come on. 1 2. 135k miles and new to me. when i started the car it was running rough and felt like it was misfiring, aftet driving for a while i did get a CEL for the misfires. Additionally, I once got a mixture preparation bank 1 and 2 code which came with the misfire codes. STFT -3. Misfire and rough idle, e46. What are the important PID values at hot idle? E46 Fanatics Forum is an independent BMW E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Although, going from 2. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by Hi all, I recently bought a 318i SE with decent bodywork and spotless interior, well looked after. Unfortunately after some time passed, the car became sluggish to pull away, and the idle became rough, hunting between 800 down to 400 and back almost stalling, and my MIL indicator came on. Cancel Create thread New Forums More Login / Join New Forums More Login / Join Search "rough idle cold start" there will be a lot of info, which parts to change, but not sure which part that causes the "misfire" glitch. Get car all warmed up and on idle, in P/N wo touch brake or gas. Save Share A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. 61 - 02 Sensor to Heater After CAT 8 - Air Mass Sensor Signal 240 - Misfire Cylinder 3 E46 Rough Idle / Misfire / Too Lean. edit: when I started, the miss-fire was with a fuel cut-off. The problem as of right now is I am getting a single code of p1348 and a lean code that's pending I believe it is a p1085 but that's not throwing a code only the p1348(cylinder 4 misfire) is and it is only happening when i leave it idle for like 10 mins then it shows back up after I clear it. Failing Oil Separator Valve? Especially with it starting to stall and catch itself. Australia. Come join the discussion about M performance So the car is 2001 330ci, in 4. Recently however, I started it up one cold morning and all of a sudden I got a very rough idle and a serious loss of performance. “Replace clutch switch sensor with new (PN 61319122700). It typically doesn't throw a CEL, but occasionally it will and the only code is for a cylinder 1 misfire. But not the misfire. I put shell v-power 93 in the tank and added Techron Fuel system cleaner - fixed my issues. E46 2004 325i Misfire Under Heavy Acceleration [SOLVED] Tags not fuel pump. Heres a quick rundown of events in bullet format. Come join the discussion about M performance, turbo kits, engine swaps No misfire codes. I will send a video soon. Content on E46 I have a 2002 325i and about 2 weeks ago, upon start up, there was a very rough, cough, idle and sluggish acceleration. When I accelerate fast in 4th or 5th gear, it will throw a misfire code (P0305) on cylinder 5 after getting between 4500 - 5500 rpm. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada To be honest with you, this car has zero issues when it’s 50 degrees or warmer outside, so 75% of the year it’s fine sitting outside. You may E36 misfire at idle, need help fixing problem! Check fuel managment health by looking at the important PIDs at hot idle. Generally, a misfire is a situation whereby one or more cylinders do not produce power due to some reasons. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG Odd thing is that the car seems fine on idle in park and drive. also how do you measure fuel trims through obd fusion? A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Jump to Latest To begin with on idle occasionally it was a bit rough, once it had warmed up and been driven however it was 100% fine and very smooth. (And can cause lean condition, misfire etc) TLDR; not wierd car runs better on full throttle I will say my car has a rough idle and a misfire on cyl 5, was heavily diag'd at the dealer including all new coils, the last diagnosis was it needing a new cam and lifters after the tech pulled the valve cover. At idle, the value was hovering between 3-21. E46 General My 2003 E46 325I (132k miles) misfires badly for 5 to 30 seconds on start up. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope BMW ROUGH IDLE MISFIRE FIX demonstrated on BMW E46 Our Website: http://mechaniclifestyle. Bad plugs are unusual- but not impossible. Car is a 2001 330I with 5 speed. 1. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. It surges under idle and runs very roughly at low in this thread in this sub-forum in the entire site. It usually starts after 3k rpms. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! E46 (1999 - 2006) need Help!!!! - rough idle, misfire codes, random CEL details inside. I usually let it idle like 5 mins then restart it, idle it some more, restart it. Every time on a cold start, when the engine is cooled down to outside temperature, I have misfire(s). Inspected sensor and found the mounting clip broken. 3 series & 4 Series (E21, E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1991 - 1999 ; E36 misfire at idle, need help fixing problem! If this is your first visit, be sure to check out the FAQ by clicking the link above. I thought maybe it was a coil, so I didn’t give it much attention (I was working a 12 hour night shift). It threw codes for cylinder 3, 4, and 5 misfire and fuel cut off. Then, if the plugs aren't new (in your memory, not the po's) new plugs. A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. I swapped it At idle, the value was hovering between 3-7. So I just ordered some new sparkplugs I'm guessing the misfires happened during the rough idle and explains the shaky bit. It continued to idle rough and start to misfire after its been warm for a while. After: This was weird. Started the research process and been a week since I tried starting the car again, now it just cranks and won't start. 90% of the time if I restart the engine, the misfire stops immediately with a perfect idle and response Sometimes rougher than other times with a Check Engine triggered. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada So an update, i was almost sure that the coil causing the misfire, after twnnew spark plugs didn't stop the misfire. Posted by u/fishcircumsizer - 1 vote and 8 comments The mechanic over at the dealership is having trouble trying to find the reason for a fluctuating idle. thermal oil level sensor, and occasionally I'll get misfire codes but that only happened once so far. When at idle, everything is reversed and DME wants minimal air and fuel, meaning unwanted air at idle makes a much more impact vs full throttle. Details: Code P0303 "misfire cyl 3" There are no other codes. qznawxs nczeoy uifuw qeaddrtf kprx xheea iyr gos qlgpyn wmulv