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Idle problem

Tiny
DMIZER01
  • MEMBER
  • 2006 CHEVROLET COBALT
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 68,000 MILES
2006 Chevrolet Cobalt LT with the A/C on and you come to a stop the rpms will drop like it is going to die for just a second but then comes back up and idles fine and sometimes it will die completely what would cause this
Wednesday, June 1st, 2011 AT 7:37 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 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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Wednesday, June 1st, 2011 AT 9:25 PM

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