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2004 Chevy Trailblazer tune up?

Tiny
ERIC HOPKINS
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 280,000 MILES
Car drives fine untill I turn heat or a/c on then it wants to stall. If turned off a/c -or heat it returns back to normal no stalling what do you think the problem is. Tune-up?
Tuesday, September 28th, 2010 AT 11:23 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Is the air conditioner working normally?
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Tuesday, September 28th, 2010 AT 11:28 AM
Tiny
ERIC HOPKINS
  • MEMBER
  • 2 POSTS
I think the a/c works ok. I really dont use it often. Especially when the car wants to stall
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Tuesday, September 28th, 2010 AT 11:34 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
If this is just an idle stalling issue 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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Tuesday, September 28th, 2010 AT 11:37 AM

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