I m new to BMW.
bought my 2207 z4 about 6 month.
put over 10k miles without any problem ( now 97K miles),
but recently when on park or at stop light, engine idling rough.
I you put in neutral then the problem stop.
Thank for some input.
Start with cleaning the idle control valve....
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Put new spark plugs.
check coil packs ( it is OK)
beside idle problem.
when accelerated from 0-40 or below 2000 RPM
It hesitate, like loose some power. or it ran rough
Once it hit above 2000 it ran smooth.
Thanks
Did you try cleaning idle control valve.... Won't hurt and it might assist in solving problem by eliminating a potential cause....
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i will tomorrow.
Old post, but what was the cause?
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