Rough cold start ups (in summer)
#12
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My Ride: 2008 535i:
(8/07 Build) Metallic Bronze, Beige NASCA Leather, Ventilated Seats, Sport Pkg, Cold Wxr Pkg, Logic-7 Sound, HUD, Night Vision, PDC, Split Rear Seats, NAV, Premium Pkg, Comfort Access, HD Radio, Sport Auto Trans
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1992 Camaro RS:
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I checked the service report and it didn't say. Basically during a cold start, the car's idle would be rough while the rpm dropped from cold to warm idle and always ran fine after that. Never got a check engine light. The SA said there weren't any codes when they ran the diagnostic, but I made them keep the car overnight and they witnessed the rough idle the next morning. They wound up keeping the car for almost a week and its been running fine since.
EDIT: I re-read your OP and my symptoms were pretty much identical to yours.
EDIT: I re-read your OP and my symptoms were pretty much identical to yours.
#13
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My Ride: Alpine White 2006 530Xi (SLD)
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Buy some MAF sensor cleaner and clean it. If rough idle goes away after cleaning, you have your culprit. Usually, it goes back to running rough after a day or two, so you'll probably need a new MAF sensor anyway. Hope this helps.
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