Mechanics

MERCURY MARQUIS CHOKE PROBLEM

1992 Mercury Marquis • 120,000 miles

When the car is idling or being driven, the engine will rev for a minute then go back to idle or to the normal acceleration level. What causes this?
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Guest
November 10, 2012.



Scan for codes and check fuelpressure, clean throttle plate with choke cleaner on both sides. Then check for a vacuum leak

Hmac300
Nov 10, 2012.