1991 500sl idles at 2000 rpms

Asked by tb20 Apr 10, 2015 at 11:25 AM about the 1991 Mercedes-Benz SL-Class 500SL

Question type: Maintenance & Repair

replaced idle control sensor car still idles at 2000 rpms in park and neutral goes to normal
rpms in gear

1 Answer
17,695

CamaroCollector answered 9 years ago

Possible small vacuum leak, check for cracked or brittle hoses, replace as needed, use some brake clean and spray around throttle body gasket area, if a leak is there the idle will go to normal then increase again, if so replace gasket and while your in there, clean the throttle body.

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