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In Reply to: New 525 owner, idle question posted by Steve Hoffins on March 26, 2000 at 22:01:24:
: I had this problem when I purchased my 525 almost a year ago. I replaced the main relay and the fuel pump relay and the problem went away. Recently, my idle speed stayed at around 550 RPM. I looked at everything with no results. I lost my gas cap last week, so purchased a new one from the dealer. After about 50 miles, suddenly my car idles where it should and has for a week now. Did the new gas cap fix that? Seems that it did, I need to look into that further. Also you may need to replace the fuel filter. Use the BMW filter as the aftermarket filters are about 2 inches shorter.
Good luck
Michael
89 525ia