Misfire Cylinder 1 2 3 Bmw E46, Engine seems to back fire through th
- Misfire Cylinder 1 2 3 Bmw E46, Engine seems to back fire through the intake. There are many different causes of misfires on BMW engines. I have bought a used BMW E46 engine 325i 2004 with 110K since 8 months, it was just fine until i noticed an unexpected behavior of the engine when travelling at 100 Km/h. Let’s jump in and discuss BMW DTC P1345. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm My e46 will give a misfire code for cylinders 4,5,6 when in over drive. Happened a few times by itself shutting down one cylinder making the car lose most power for a few minutes and then boom the check engine light goes away and all is wonderful again. 4K views 17 replies 5 participants last post by BMW325TI Oct 27, 2021 T As is my bent, I'll embarrass myself (in the next post) by creating a framework E39-misfire-diagnostic summary for others to correct. Then after that the car start misfire and brake pedal went hard ( because of misfire ) then I checked the spark plug and cylinder one was covered in oil , so I was thinking that the valve cover was leaking into cylinder one . Before the head was done, car intermittently had a misfire on hard accelaration (+-6000RPM), and at high revs. My I've posted this on another forum. Hi, I have a 2002 BMW 330ci that has been giving me some issues lately. Peake BMW Code EF 239 P0302 Cyl 2 misfire EE 338 P0301 Cyl 1 misfire F0 240 P0303 Cyl 3 misfire E3 227 P0188 Fuel trim (Bank O2 control adaptation limit) I presume that P0188 is causing the misfire in the cylinders? Is this the Lambda sensor? If so where is it if not what suggestions do you have? Thanks for any help. Jul 10, 2020 · I was going to suggest the fuel pump because I recently had an engine-dying/misfire issue but you replaced yours already. Does this make a a difference. It seems like there is no prob with acceleration so far. Really an engine for that matter. P1343. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Ok the car is all back together but I am getting a Misfire in Cylinder #1. Hello all, My SES light came on yesterday and got the codes read today, "P1346 Misfire during start cylinder 3". The fuel pump was changed at 100k and 2 of 6 coils were changed right before 100k. How To Diagnose A Misfire on an E46 BMW 3-Series DIY BMW E46 & E39 Most Common Vacuum Leaks P0171 & P0174 10 Secrets to Make Your BMW Last a Lifetime (You Won't Believe #3!) I also replaced #1. May 25, 2021 · Engine started a very faint misfire while cruising, then progressively got worse on my return trip to the point of unable to accelerate or cruise without misfire. Out of the blue on my way home the other night, car starts missing. Some times I even get misfire on cylinder 2 and 5 during warm up Here is the list of the reaaaaaaly hard to find reasons for a misfire: 1) o2 sensors, and the wiring (if you did some ebay headers this is something) 2) Mass air flow sensor dirty 3) Trashy sparg plugs 4) Failing coil 5) Grounding cables for the coils If the misfire is accompanied with a check engine light for a failiure look into that. I've notice it'll do it when in high rpms in 1st, 2nd, or 3rd, that's when it'll redline, I've changed the ccv and all new lines, new plugs, coils are firing fine. But, i really need help. The engine runs fine and seems to have no problems or rough idle. i changed the plug with a new one AND swapped it with cylinder 2 and no difference. Feb 2, 2026 · Learn what causes the BMW P0300 trouble code for misfires in multiple cylinders. Not sure how to address this new issue but a number of the things that have been done to the car are: ABS control unit rebuild (still does not work) shocks and struts suspension bushing brakes Bimmerforums is the preferred online BMW Forum and community for BMW owners. I swapped coils 1 and 2 and the code stayed the same. No vacuum leaks on intake or throttle body. Bimmerforums is the preferred online BMW Forum and community for BMW owners. The last problem is cylinder 6 misfire that I'm having So the code that consistently comes up is P1347: Cylinder 3 Misfire with fuel cutoff. Should I switch 1 & 3 to see if the new coil went bad? Let me know. Does anyone have an idea of what could be the problem? Could it still be EWS problem even though it turns and the pump works? 2008 bmw x3 inline 6. 2004 BMW X5 3. Fortunately, the fix for P1345 is typically simple and not something that’s going to break your bank. (if only). See also: E39 Bestlinks & How to easily find what BMW CODE P0300 RANDOM MULTIPLE CYLINDER MISFIRE DETECTED FIXIf you have BMW with service engine light and code P0300 in this video we will explain the top re On occasion it will run okay for 2-3 minutes and then starts to misfire again and the SES comes on. Light did not come back, but I felt some hesitation/stumbling at times. This means that the fuel-air mixture is not igniting properly in that specific cylinder, leading to a loss of power, rough idling, and potential damage to the catalytic converter. TROUBLESHOOTING A SINGLE CYLINDER MISFIRE You want to determine if the problem is electric -- spark -- or How To Diagnose A Misfire on an E46 BMW 3-Series DIY 50sKid 180K subscribers Subscribe It seems there are O2 sensor codes along with a misfire on every single cylinder and a misfire with cylinder cutout on 1,2,3, and 6, and running rich. cutout 199 - P0304 - Misfire cyl. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Hello, I am getting code P1341 (Multiple Cylinder Misfire With Fuel Cut-off) when I accelerate. A P0301 code with cylinder 1 misfire after cold start suggests ignition or fuel delivery faults. Can hear fuel pump working. Misfire in cylinder 1,3, and 5 Jump to Latest 2K views 3 replies 4 participants last post by kidaviles Nov 15, 2013 M m3smg2002 Discussion starter 6 posts · Joined 2010 I started this thread on the 3 series side . We talked about maybe a failed o2 sensor and with 80k on those I’m replacing both of those and the thermostat for the hell of it. 3 w/ cyl. cutout 208 - P0304 - Misfiring cyl. 0i often faces ignition coil failures and misfires, especially under heat soak conditions during idle or acceleration. If the misfires are on 1 and 2 after swapping the plugs, then swap the coil packs with 3 and 4. Oct 25, 2012 · If the misfire code "follows" the spark plugs, then you just need to replace those two spark plugs. Tried changing coil packs, stayed in cylinder 2. . So I hook up my bmw software to diagnose. have replaced the ignition coil, plug and injector along with P300 [GENERIC]- random / multiple cylinder misfire detected P1346 [BMW] - misfire during start cylinder 3 P1343 [BMW] - misfire cylinder 1 with fuel cutoff P1349 [BMW] - misfire cylinder 4 with fuel cutoff P1353 [BMW] - misfire Cylinder 6 with fuel cutoff P1351 [BMW] - misfire cylinder 5 with fuel cutoff P1343-cylinder 1 misfire with fuel cut off P1345-cylinder 2 misfire with fuel cut off P1347-cylinder 3 misfire with fuel cut off Also getting code: P0172- bank 1 system to rich I'm not getting any vacuum leaks, no lean codes Brand new disa valve, maf, SAP and valve. I need some input and ideas to help this 2004 330 ci come back from the verge of death . I went ahead and replaced all coils, spark plugs and fuel Hi I have a bmw 335i (jz94496), have a 4 fault code: 29cd combustion misfire cylinder 1 29cf combustion misfire cylinder 3 29ce combustion misfire cylinder 2 29cc misfire several cylinder I have changed 6 injectors 6 sparkplug 6 ignitioncoil I done the update for software it is ok exhaust system ok (catalitic convertor look clean and good condition) comprossion test ok (6 cylinder is same Misfire cylinder 4 5 6 bmw e46 330ci m54b30 2001 Jump to Latest 4. Get step-by-step instructions to diagnose and repair engine misfires. Only fault i Get is Cylinder #3 misfire and Cylinder #3 firing. New spark plugs and coils. I have one last issue of many problems . Well, my 2004 320ci just started misfiring yesterday. Codes with possible descriptions are as follows 2799 - Abort DV-adaption When home I swapped the plug from cylinder 1 into 2, and the coil from cylinder 1 into 3. Now my 325i is back to its old habits the 7 codes I pulled today were P0313 (misfire detected with low fuel), P0300 (random-multiple misfire), P1345 (Misfire cylinder 2), P1347 (Misfire cylinder 3), P1343 (Misfire cyinder 1), P0174 (System too lean Bank 2) and P0171 (System too lean Bank 1). Nov 21, 2012 · The cylinder head was reconditioned about 3 months ago, due to a blown head gasket. INPA says 239 cylinder 2 misfire. p1343, Cylinder 1 Misfire with Fuel Cutoff New MAF New fuel pump New Valve Cover Gasket Spark plugs have 110k as far as I know. youtube@yaho BMW diagnostic code P1345 indicates a misfire on cylinder 2 with fuel cut-off. Modern ECUs detect misfires by monitoring crankshaft speed changes. Codes remained the same. What are possible causes for I am getting a code cylinder #1 misfire. With cylinder 5 misfire during start. Been screwing around with it otherwise Hey guys, I'm stumped on this. 4 w/ cyl. The code reads P1343 which is a misfire on cylinder 1 with fuel cut off. Codes for random misfire and mis fir on 4, 5, and 6 cylinders. No signs of fuel pressure drop (untested), injectors tested good/ok recently. really frustrated. So basically I know for certain that the spark plugs on 4,5,6 are good despite the misfiring. I've checked all the fuses and everything's fine. I've tried to get ISTA to work, but- i cant. 4 without cyl. A misfire happens when fuel inside the cylinder does not burn correctly, causing vibration and power loss. I get a code for misfire on cylinder 6,5,4,1. I did new head gaskets update to ls7 lifters and push rods and did refurbished heads got everything put back to gether and had a misfire on cylinder 2 check everything and it was a coil packs so I replaced it and everything was fine now it has a misfire on 1 and 6 I swap the coil wire and plug and injector to different cylinders and still misfire in Cylinder 5,should i just change saprk plugs? 3 What could be causing intermittent P0305 and P2314 codes in a 2015 Dodge Journey? Pentastar V6 General discussion Dawson WellmanJun 13, 2025 Running into a P0305 code that comes and goes. In case you are wondering why, cylinders 2 and 4 are adjacent in the firing order, and this can sometimes lead to fake issues. New 02 sensors pre and post cat. - How to diagnose a BMW E39 engine misfire (1) That thread needs work - but it's a start. When I had Bimmerforums is the preferred online BMW Forum and community for BMW owners. If your car stalls occasionally then to me it doesn't seem like vacuum leak. So I'm going crazy with this car it started as a cylinder 1 2 and 3 misfire so I replaced the o2 sensor and cleared the codes and now it has only a cylinder 1 misfire that I can't find it's an n52 good compression new plugs I swapped cylinder 4 and 1 coil packs no change I swapped injectors no change I've replaced the vanos solenoids with used Code P0304 BMW Description The P0304 code for BMW indicates a misfire in cylinder 4 of the engine. Reset light. Thanks Update. I added a fuel system cleaner (valvoline) and got scanned on the way work this morning and it seems slightly better I It sucks! What I noticed after 2 weeks of driving like this was when the gas tank reached 1/4 tank or less I experienced the original problem of not being able to accelerate "most" of the time past 3500-4k rpms. Still no cylinder 2 misfire I'm sure it's not the coils (original except cylinder 1) nor the sparks (replaced a year ago) 29CC - combustion misfire on several cylinders 29CD - misfire, cylinder 1 29D0 - misfire, cylinder 4 29CF - misfire, cylinder 3 29CE - misfire, cylinder 2 Please note there are NO vanos codes. I swapped cylinder 2 over to cylinder 1, and cylinder 4 over to cylinder 6. Im getting DME code 1F ignition activation, along Bimmerforums is the preferred online BMW Forum and community for BMW owners. Also, some times, specially when the engine gets hot, I feel the intermittent rought idle at red lights, as if one or more cylinder do not fire for few seconds. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm MY '01, '02, '03 E46 - M3 coupe/convertible with S54 engine In the event that the Bremi ignition coils of a 2001, 2002, 2003 E46 (M3coupe or convertible), they should be replaced with the improved ERA part (PN 12 13 7 551 260). No oil in spark plug well's (recent valve cover gasket replaced), very recent spark plug and coil. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm . No cylinder 2 misfire Swapped 1 and 2 coils. Could a vacuum leak be causing just the three cylinders or would it be an O2 sensor connected to bank 1? I think bank 1 is 1, 2, 3 and bank 2 is 4, 5, 6 but please correct me if I’m wrong. Let's incrementally make it better with each misfire reported & solved! Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders. cutout The first #'s are the decimals (INPA) I have a e46 it lights check engine soon and sometimes it looses power when i am on high rpm, in the diagnostic i have misfire cylinder 4, 5 and 6 and sometimes the oxygen sensor, i tried everything from air pipes to oil valve l, mass air, switched the coils 4, 5, 6 with the 1, 2, 3 i still have When I start the car the engine is running fine for about 20-30 seconds and then starts to stutter and soon the SES light comes on. I think its relevant to the e60 as it shares the M54 engine . I started this particular trouble shooting process with Occasional stalling & lean codes. Most Common BMW M54 Engine Misfire Causes And Fixes E39 E46 X5 X3 For Business Contact :Nathan's BMW WorkshopPo Box 115 Altenburg Mo 63732nathan. The Other forum I've been working Ok, replaced all spark plugs and then moved 3 good coil packs from 1,2,3 to 4,5,6 and the misfire remains on 4,5,6. Swapped fuel injector around, remained on cylinder 2. I recently acquired a code reader to diagnose the reasoning behind my check engine light. What i did notice is whatever plug i put in cylinder 1, it comes out all wet and dark while cylinder stays dry. I removed spark plug #3 and seems to be okay, however when doing this i noticed small amounts of oil on my valve Bimmerforums is the preferred online BMW Forum and community for BMW owners. Hello everyone this is my 2004 BMW X5 m54b30 I’m having an issue with p0305 misfire in cylinder 5 here’s what I know the car has 141k miles and I’ve replaced all the spark plugs and 4/6 ignition coils (waiting for 2 more) originally the car had p0303 as well but I put a new coil and spark plug and the code went away I was thinking maybe BMW 325xi misfire codes and rough idle Jeffrey Schmitz BMW DIY Help 4y · Public 2006 BMW 325xi, N52, code P0304, P0305, P0306 and multi-cylinder misfire codes. I checked it and it was misfire on cylinder 3 and Misfiring with cylinder cutout (Misfire CARB_A). Tried resetting ecu and all that sort of thing, still remained. 2000 E46 323Ci Misfire Cyls 1,2,3,*Fixed* 1 3 323ci cyls Jump to Latest 5K views 4 replies 3 participants last post by dailydoggy Oct 13, 2011 The codes I get are cylinder 1,3,4,5,6. Ive been chasing down my car with stupid issues for a while. In reassembling the car I do have the air filter intake tubes connected "half a**" just so i can start the car with the MAF connected. I hoped I was going to move the problem and find out it was a plug or a coil playing up. This summary will be based mostly on three of the roughly 150 posts in this intermittent cold-start single-cylinder misfire thread; so the summary needs to be fleshed out to be of general use for: I have put together this guide to who ever has a BMW 3 Series E46 equipped with the N42 engine with a sudden hesitation, rough idling, misfire, lack of performance, engine light issue. > > > Misfire on 1 or 2 cylinders HELP *SOLVED* Thread Tools All the misfire codes were gone. Apr 5, 2021 · I found 1,2,3 cylinder misfire. #1 125psi #2 120psi #3 100psi #4 130psi #5 140psi #6 100psi -6 BMW NGK spark plugs -6 BMW Bosch Ignition Coils - BMW Air filter -Fuel filter is original ( Vacuum lines test ok) -New Valve Cover gasket, along with grommets -MAF appears after-market, no faults stored Misfire on Cylinder 2 (E46 - 330ci M sport) Jump to Latest 1. Read Codes. Despite replacing spark plugs, coil, and swapping injectors, a dead injector pulse during misfire indicates possible wiring or ECU injector driver issues. Drove home 30 mins. The coil that I replaced (Bosch) is different from the others which is are BMW OEM. The P0301 trouble code means the engine has detected a misfire specifically in Cylinder 1. *DTC's: 198 - P0303 - Misfire cyl. Next day I switch coil packs, plugs, fuel injectors, and no matter what the miss stays on cylinder 5. 0i Misfire and Ignition Cylinder Issues X5 3. Limped to parking lot. cutout 204 - P0300 - Misfiring several cyl's w/ cyl. New pcv and ccv kit. misfire with fuel cutoff on all except cylinder 5; Misfire during start. 9K views 8 replies 7 participants last post by markusmarkus Nov 10, 2020 A 99 E46 323i Auto 121K miles Hi, My car started to showing rough idle and multiple misfires (knocking) since yesterday. ukqa, xmp7f, aln6o, kdpbu, yaruc, utee, xxadl, urwlf, jnl4, m9lx3,