will start but won't idle

2003 CHEVROLET AVALANCHE
243,000 MILES • V8 • 4WD • AUTOMATIC
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CINDYW
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  • 1 POST
Negative cable on battery was unhooked and after it was reconnected the truck won't run right. It won't idle, will stay running as long as foot is on the gas and will drive on the interstate fine. Have been told the computer has to relearn how to drive but it hasnt so far.
Jun 21, 2009 at 1:29 PM
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RASMATAZ
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  • 75,992 POSTS
Hello,

It sounds like you have a vacuum leak or the throttle bore needs service these guide will help us fix the problem.


https://www.2carpros.com/articles/stall-at-idle

and

https://www.2carpros.com/articles/throttle-actuator-service

Please run down these guides and report back.

Jun 21, 2009 at 3:36 PM
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OIDAVEY
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  • 0 POST
I serviced the throttle bore like the guide said worked great! I love this website.
Jan 9, 2020 at 12:38 PM
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