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1989 Ford Crown Victoria idle problem

Tiny
DAVIS91851
  • MEMBER
  • 1989 FORD CROWN VICTORIA
  • V8
  • 2WD
  • AUTOMATIC
  • 12,000 MILES
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.
Monday, October 18th, 2010 AT 9:45 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
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.
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Monday, October 18th, 2010 AT 11:10 AM

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