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      07-12-2014, 04:21 PM   #31
JM35
N54 Tuner
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Drives: 2008 135i 6spd
Join Date: Sep 2013
Location: Houston

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Quote:
Originally Posted by Perfectus View Post
I'm in the same predicament... I had my plugs replaced by the dealer under the warranty. It idled horribly and I gave it back to them. They found codes for 2 "faulty" spark plugs. They replaced them and the car is still idling rough but not has rough as it did after the initial replacement. My car is at 46k+ and never idled like this before. Even after the car has warmed up and been driven for an hour+ the idle is still rough. I gave it to them for a week and told them to fix it. They said its normal and couldn't find anything wrong, no codes, etc. They can't do anything without codes and I told them about the injectors, coil packs, etc...no action without any codes.

Should I contact BMWNA?
I'm having this exact issue, although I havent taken it to the stealership since I am no longer under warranty.

Car idles rough at about 600rpms, other than that it is still smooth and perfect. Checked the coils and the connectors and everything seems fine. No CELs or anything.

Has anyone figured this out?
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