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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Can I feel a misfire problem from inside the cabin?



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      09-18-2009, 08:52 PM   #1
Prowess Symphony
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Can I feel a misfire problem from inside the cabin?

Ive had the car misfire twice, both on cylinder 1 or 6 I cant remember which. Could I feel a misfire issue from sitting in the car at idle? The rpm needle doesnt move, but I feel a vibration and can hear a change in pitch for a split second. When my old camaro did this there was a miss issue. But the 335 vibrates so much normally I cant tell.

It also feels like I have a laggy acceleration at slow speed. Again however, this is an issue with these cars. So the vibrations and lag, could be a miss, or it could be how most of the 335's are normally. How can I tell the difference? Thanks
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      09-18-2009, 09:03 PM   #2
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Has there been any lights(SES) on your dash board? Does it happen on cold starts?

This might help you out...

http://www.bmwtis.com/tsb/bulletins/...p/B130409g.htm
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      09-18-2009, 09:04 PM   #3
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Yeah I got an ses both times, obdII says it was a misfire on cylinder 6 or 1, I cant remember. So I definately had two misfires. I just wondered if I could feel any difference in the car or only when a misfire happens. Ill check the link, thanks.
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      09-19-2009, 02:20 AM   #4
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Depends on the misfire: sometimes you can feel it (usually a car goes into a limp mode in such sutuations), sometimes there's only a shadow code.
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      09-19-2009, 03:45 AM   #5
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im having the same problem, but only misfire in the morning warm-up mainly or if im idling for a long time at a red light. i thought it was because of my JB3. im taking my car in for service on tuesday so i'll let my service advisor know about this.
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      09-19-2009, 10:19 AM   #6
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Quote:
Originally Posted by MrChessy View Post
Has there been any lights(SES) on your dash board? Does it happen on cold starts?

This might help you out...

http://www.bmwtis.com/tsb/bulletins/...p/B130409g.htm

Just had my car serviced per this SIB. It completely fixed the rough idle/misfire problem which had gotten so bad the car was almost undriveable after a cold start.
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      09-21-2009, 12:57 AM   #7
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During idle, does the engine sound and feel completely smooth? I notice a slight change in pitch and a tiny vibration every few seconds.
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