1989 Ford Crown Victoria idle problem

1989 FORD CROWN VICTORIA
12,000 MILES • V8 • 2WD • AUTOMATIC
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DAVIS91851
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  • 1 POST
I have an auto idler/choke problem. It starts fine but fluctuates RPMS and will smooth out after a minute. If the engine is already warm and a/c is on the engine may die during the fluctuation of high/low idleing until it smooths out.
Oct 18, 2010 at 9:45 AM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
Oct 18, 2010 at 11:10 AM
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