running

2003 PONTIAC SUNFIRE
150,564 MILES
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L D
  • MEMBER
  • 2 POSTS
what would cause a 2003 pontiac sunfire to cut off when it comes to a stop without any indicator lights but it starts back and appears to run smoothly. and what needs to be done to correct the problem
May 24, 2011 at 9:28 AM
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WRENCHTECH
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 20,761 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.
May 24, 2011 at 2:07 PM