Join Date: Mar 2002
Location: Wrightwood, CA . U.S.A.
Check the butterfly valve in the throttle body for coking(sludge build-up). If it is dirty, you can clean it with carburetor cleaner and a fine bristle brush. Just remember that when you're done, you may have to hold the pedal to the floor to start the car because it may be flooded. Other things to check are idle air control valve operation and passages, bad grounds to the computer, base idle speed adjustment, and the computer itself