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Old 11-29-2012, 09:55 AM
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Monsignor Monsignor is offline
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Location: Pineapple Under the Sea
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Originally Posted by E34Addict View Post
However, through out the day, my idle RPM is never stable and keeps swinging between 0.6 and 1.2 approximately, and all the lights in the car goes weaker and stronger with the RPM. However, at the sea level, the idle RPM swinging is much less severe and sometimes almost not noticeable. In addition, when I am parking, I can notice a little black smoke emissions from the exhausts when I hit the gas pedal almost all the way through.
Check the air filter and MAF. Make sure it is clean and good, and throw a little carb cleaner on the MAF. If that doesnt help, then take a look at the ICV, although i'm not entirely sure how that would affect the altitude difference...

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