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2003 Trailblazer A/C

Tiny
CHEVYTRUCK03
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 92,000 MILES
When the a/c is turned on, the car seems like its loosing charge and putters as if it is about to cut off. Also, the a/c as well as the heat has to be turned on 3 or higher before anything blows out. What is causing this and how to repair? Please help
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Monday, May 16th, 2011 AT 8:32 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You have 2 different issues here and they really need to be separate questions or it gets way too confusing. I'll address the idle problem here.

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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Monday, May 16th, 2011 AT 9:10 PM

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