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BMW 3-Series (E90 E92) Forum
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**First Time Tuners** Start Here** Official Misfire Thread| Updated!
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03-24-2014, 10:16 PM | #243 | |
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http://www.e90post.com/forums/showth...+solder&page=6 Most likely the ecu is your problem. May be covered under emissions warranty. Good luck. |
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04-20-2014, 06:45 PM | #245 |
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I feel everyones pain. i started getting a misfire last year so i replaced the plugs and all seemed to be fine, at least for a few hundred miles. i then brought it to the dealer where they replaced all my injectors with the new updated ones and the problem wasn't fixed, so i figured i would replace the coils and the plugs again. After those the car ran fine for a few hundred miles again. when the misfire started again, i brought it to a friend who is a bmw tech, he noticed a mouse had chewed some of my coil pack and injector wires. i bought and replaced that, nothing changed after the wire harness so i gave up. after a few weeks of just ignoring the problem the misfire got worse and worse until the car would no longer fire on cyl1 at all. So i brought the car back to bmw where they found i had no compression on cyl 1. so now i have a new 0 mile long-block, new injectors, new coils, new plugs, new wire harness and now after 1000 miles... i have a misfire at idle again.
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04-23-2014, 12:18 PM | #246 |
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Misfire started last week with the engine management light on.
Took it in today and the codes thrown up are as follows.. 29cc Misfire detection 29cf Misfire cylinder 3 in 2d firing sequence 29c0 or d Misfire cylinder in 1st firing The mech changed the spark plugs, still doing it. Cars still in, he's getting no volts from the knock sensor Any clues anyone ? Wondering of anyone has had these codes before? |
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04-24-2014, 01:54 PM | #247 |
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Had it done today, it was coils , so had set of plugs and three coils on.. £170 ( $280) that's with the parts , labour and plug in -reset
Cars running great now... hope this helps someone else |
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04-28-2014, 02:18 AM | #248 |
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Hi
Are people still having issues with their SI's. I've just purchased one and it's showing misfires on cylinders 1-2. And this is after changing the sparks and coils on all 4 cylinders. Had a compression test done and this is showing low compression on the the cylinders. Is it already time to give the car back? |
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04-28-2014, 12:21 PM | #249 |
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is anybody running colder plugs than stock? I'd think that with the mods we throw at these things they're prefer a colder temp range than the stock stuff, but I suppose without a misfire/timing pull there's no real reason to change them... are people running stock on the fbo/meth/18psi cars too?
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05-06-2014, 01:13 PM | #250 |
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What was the resolution to CD87?
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05-09-2014, 05:43 PM | #251 |
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I was having misfire in cylinder 5 under load.
After changing plugs and coils and verifying injectors were not the issue, a cleaning of the intake valves via walnut blasting looks to have fixed the problem. |
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06-20-2014, 07:44 PM | #252 |
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Very informative thread. I'm trying to fix a misfire issue I have on cold starts where the car will not idle and will eventually go into limp mode, after a minute or so however the car will run fine unless I am driving it hard in which It will misfire when I go WOT. So far i've replaced the plugs, coils, injectors, HPFP sensor and walnut blasted. What should I look into next? Possible to clean this vanos thing I've heard about.
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06-23-2014, 11:16 AM | #253 | |
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greattt
love this
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07-10-2014, 11:46 AM | #254 | |
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e90 LCI w/ -= VRSF 7" FMIC =-
-= Cobb: Stg1 +FMIC Aggressive ST =- Last Install: BMS DCI + Caliper/Drum Paint "If you're not 1st, you're last" -Ricky Bobby |
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07-20-2014, 09:03 PM | #255 |
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Cylinder 2 misfire
I've been having cylinder 2 misfires only with WOT. It happens pretty much every time I do a prolonged pull. It is also associated with a 2AAF code (not sure the significance of this one). I have about 83000 miles (mostly highway) and have been tuned for most of it. Went FBO recently. Had intake valve cleaning a couple weeks ago (just before I had this problem start).
I tried swapping coil packs but the code stayed with cylinder 2. I next pulled the spark plug, but it seemed to be in good shape (only about 10,000 miles on the plug) so I swapped it with a different plug. The misfire code stayed with cylinder 2. Any thoughts on where I should go next? Thanks. Last edited by awawd335; 07-20-2014 at 09:40 PM.. |
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07-23-2014, 01:34 PM | #256 |
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Cars in the shop getting new spark plugs put in as we speak
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08-14-2014, 10:22 AM | #257 |
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just had this happen last night
Cylinder 1 misfire Car is new to me with 65k miles. I plan to replace plugs first and see if it helps. Car is mostly stock with Cobb AP, K&N Drop in, 7" FMIC
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08-16-2014, 03:36 AM | #258 |
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Hey guys this problem is giving me the biggest headache and frustrations.
I'm running jb4 g5 FBO. I run either map 2 or map 5 if I run e85. I keep having misfire on cylinder 1. I have: -changed bank 1 injectors -new coils and plugs -carbon clean up (100 miles) The misfire only happen in cylinder 1. Not all the time, but it will trigger whenever I thought I fixed the problem, so annoying!!! Once it popped up 29dc - "cylinder shut off" code. This code has not come back since the last time. But I would get misfire on cylinder 1. I would say 1 out of 5 run the misfire will trigger. Please help me guys I'm so clueless at this point. |
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08-16-2014, 03:40 AM | #259 | |
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09-14-2014, 01:44 PM | #261 |
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This past week I started having misfires on cold startups from what this thread is telling me is that it's a leaky injector, but the thing is I'm getting missfires in multiple cylinders mainly cyl 1 & 4 sometimes cyl 5. Is it likely that multiple injectors are leaking at the same time?? Or maybe these missfire are related to something else like the hpfp?
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10-20-2014, 12:18 PM | #262 | |
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10-20-2014, 12:40 PM | #263 | ||
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I have not gotten a misfire on WOT yet and I have been pushing the car frequently |
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10-21-2014, 12:51 PM | #264 |
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I recently got a Vanos Solenoid code thrown and plan to install two new ones as they are most likely original and I am at 67k. My question relates to the Cobb and the ability to view the required and actual values for both intake and exhaust on the Vanos. Should the values or actual match the required? My Exhaust is almost dead on. The intake is however quite far off. Thank you!
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