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BMW 3-Series (E90 E92) Forum
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Changed my plugs at 33k... never again. Lots of pics.
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07-09-2014, 11:51 AM | #23 | |
First Lieutenant
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Took me a while but I finally pulled the code which was Cylinder 1 misfire. I made the mistake of taking the car apart before getting a thin-walled spark plug socket, so while I was in there I swapped coil pack 1 & 2. Went back out to pull the codes again and still got cylinder 1 misfire. My original guess was spark plugs, coils, or injectors. Now that I've eliminated the coil it must either be plugs or injectors. Based on my symptoms I'm thinking it must be spark plugs because the stuttering and rough idle is likely caused by extra fuel in the cylinder which wasn't burned due to a weak spark. Once its all burned up after a minute (or my next stop & go) its all good again. If it were injectors the cylinder would likely be misfiring due to a lack of fuel which would present different symptoms. Spark plug socket should be here Thursday then I can finally see the true potential of the Jb4 and DCI's! Can't wait! Easiest way to eliminate parts before buying is by swapping them around after pulling codes. For example, if you get cyl. 1 misfire swap the #1 and 2 coils. If you still get cyl. 1 it can't be coils so move on to plugs. Switch plug 1 with 2 - if its still cylinder 1 misfire then swap injector 1 with #2. Eventually the problem will move to the new cylinder you switched the part to and that will be the culprit.
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07 335i
Mods: JB4 + MHD BEF, RB Twos Plus, Phoenix PI Manifold, Dual Walbro 450 LPFP's, DCI, VRSF DP's, VRSF 7.5" FMIC, VRSF CP + TiAL BOV, VRSF inlets & aluminum outlets, TC Kline SA, M3 F/R control arms, M3 subframe bushings Last edited by Zach1328; 07-09-2014 at 11:57 AM.. |
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07-10-2014, 03:44 PM | #24 |
Captain
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just did mine last week piece of cake! even my girl who was keeping me company said "thats it?" haha the bms tool comes in handy makes it that much easier i wouldnt recommend anyone paying for this service too easy IMO
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07-11-2014, 01:11 PM | #25 | |
king of the hills
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Drives: 2011 M3 w/ESS55, 2001 540i/6
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Quote:
BTW, if your problem isn't solved by the plug or injector, it could possibly also be carbon build-up. |
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07-11-2014, 01:51 PM | #26 | |
Major nutz
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Drives: '09 n54 e92xi, 6mt, kw v3
Join Date: Sep 2009
Location: Colorado, USA
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I did get three codes the other day (two at once) but they ~seem~ to be completely unrelated. They are:
These are the only 3 codes stored in the DME. I can't imagine getting a limp from any of those three, maybe the last one is an issue ('cause I only get a limp if the engine is up to temperature). Commuted home from work on I-25 already today, I got the damned limp mode again. "Rebooted" the machine at 60 mph () and limp was gone. I will replace the coolant temp sensor 1st and go from there, 2nd the CAT sensors, and finally 3rd Proceed goes bye-bye.
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07-22-2014, 04:46 PM | #27 | |
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08-11-2014, 08:22 AM | #28 |
Major nutz
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Drives: '09 n54 e92xi, 6mt, kw v3
Join Date: Sep 2009
Location: Colorado, USA
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Found this gem of a thread last night and it describes my problems to the 'T'.
http://www.e90post.com/forums/showth...=726481&page=2 I already ordered a walnut blast wand and intake adapter last week and should be receiving those this week. Already upgraded my air compressor and will be picking up a media blasting kit from Harbor Freight on my home from work today. Gonna get this sh!t done. So sick of a 80% car.
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