Car will start but wont idle

Tiny
LISIECKI1779
  • MEMBER
  • 1991 CHEVROLET CAMARO
  • 5.7L
  • V8
  • RWD
  • AUTOMATIC
  • 250,000 MILES
When you start the car you have to hit the gas otherwise it wont start, but then if you let off the gas it will die it wont sit and idle.
What is the problem here? I have tried just about everything.
Monday, August 8th, 2016 AT 1:44 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
First eliminate all vacuum or air leaks in the system (very important)

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 carburetor 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, August 8th, 2016 AT 1:47 PM

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