Will not idle after starting the engine?

Tiny
GARRETT VASKA
  • MEMBER
  • 1998 CHEVROLET SUBURBAN
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 235,000 MILES
The vehicle listed above is an LT. It will start, run for a couple seconds and then shuts off.
Thursday, June 8th, 2023 AT 2:47 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,057 POSTS
This sounds like a vacuum leak, or the throttle body needs to be serviced. here are three guided to help us get started on fixing the problem:

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

Use this guide when the engine is cold only:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and

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

Please run the codes as well and go over these guides and get back to us.
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Friday, June 9th, 2023 AT 11:48 AM

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