Engine dies when idling

Tiny
ROBERT MIKSIK
  • MEMBER
  • 1993 CADILLAC STS
  • V8
  • FWD
  • AUTOMATIC
  • 200,000 MILES
1993 sts starts runs dies when goes into idle. Restarts ok
Wednesday, March 2nd, 2011 AT 11:12 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and 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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Thursday, March 3rd, 2011 AT 12:00 AM

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