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08-12-2014, 09:59 PM | #1 |
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My engine has been acting different lately. On cold starts it coughs or jerks randomly for a couple minutes until the engine warms up. I can feel a jerk while parked and the RPM drops slightly when it jerks. If I drive it during this it jerks more as if power is interrupted. It has been happening repeatedly for multiple weeks. Thank for the help.
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08-13-2014, 07:30 AM | #4 |
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Mine does this also. Runs perfect after a minute or two. Now a days I just let the car idle a few minutes before taking off in the mornings. If I do that, I have no problem at all.
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08-13-2014, 07:50 AM | #5 |
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Don't jump to it as it's $1000 just in parts, but my car did this when the injectors went bad. I changed the injectors and I was good to go. It was more pronounced during the colder months.
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08-13-2014, 09:43 AM | #6 |
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I do not get any code. Mine only does this in the morning after sitting all night. I just got my fuel pump replaced a few months ago. I also replaced 3 of the 6 injectors. Not ruling out a bad injector but I have yet to get a misfire code.
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08-13-2014, 06:25 PM | #8 |
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Drives: BMW F80 M3 & F87 M2
Join Date: Jun 2014
Location: 3941 E La Palma Ave Anaheim CA 92807
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Either coils or HPFP!
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Carbon fiber for the everyday driver: rwcarbon.com 3941 E La Palma Ave Anaheim CA, 92870 info@rwcarbon.com / (714) 328-4406 Instagram/Tiktok/Facebook: @rwcarbon |
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08-13-2014, 08:25 PM | #9 |
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been happening to me as well. already had all injectors and plugs replaced. thinking HPFP and walnut blast are due next. Lets see if I can convince my dealership lol
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09' Crimson Red 135i - FBO, E50, PTF tune, cool stickers |
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08-14-2014, 03:51 PM | #11 |
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I guess I better schedule an appointment at the dealership. Is there a warranty on injectors or coil packs? I have an extended warranty (CPO).
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08-14-2014, 08:29 PM | #12 |
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CPO covered my injectors and plugs. I'm sure it'll cover coil packs as well.
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09' Crimson Red 135i - FBO, E50, PTF tune, cool stickers |
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08-14-2014, 11:27 PM | #13 |
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08-20-2014, 04:45 PM | #15 |
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Did you fix the problem, I am having kind of the same problem. 2008 with 47,XXX.
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08-20-2014, 04:57 PM | #16 |
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My car does this too, it's not much of an issue yet so I'm going to live with it until it gets bad and I can take it in under warranty. My guess is injectors since I have 3 old part numbers. Everything else has been done besides walnut blast.
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2008 Aw/Coral Red Manual 135i Coupe-
JB4 G5 + BMS race flash, BMS meth kit, VRSF DP, Big tom Ic, BMS chinese tester CP, Custom Muffler Delete, BMS Oil Cooler Valve, Cowl Filters, Clutch Stop, B&M Short Shifter, Spec Stg 2+ Clutch W/ Oem dmfw, Vmr V710, KW v2, M RSFB, 1M Front and rear Bumper, Performance Side Skirts, slek trunk, Lci blacklines.] |
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08-27-2014, 10:33 PM | #17 | |
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Quote:
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08-31-2014, 10:13 AM | #18 |
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Mine does this too, I just figured it needs carbon cleaning considering it has almost 74k miles and has never been done.
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2009 135i 6MT jb4, ER CP, Tial BOV, 7" VRSF FMIC, BMS DCI, BMS 91 Pump flash running 35% e85
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09-01-2014, 02:24 AM | #19 |
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My HPFP and injectors have been replaced fairly recently and my car was doing this until i got a new set of oil feed lines for the turbos and i convinced them to carbon blast as well under warranty. This cleared up the whole problem its amazing how much carbon these build up over time
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11' m57 335d 165k Miles - JR 2, ATM Full Exhaust & Intake, Wagner FMIC, AAR Boost Pipe, AAR Swirl Delete, AAR EGR Delete
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09-03-2014, 09:14 PM | #20 |
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Mine is doing something similar I think. I would love to know what would fix this. I have new plugs.
Last edited by FactorX81; 09-04-2014 at 06:40 PM.. Reason: fixed youtube link |
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