Vehicle cranks but shuts off when the gas pedal is released.
Dec 28, 2017 at 4:34 PM
Shuts off
2005 CHEVROLET TRAILBLAZER
MLRDZ99
- MEMBER
- 2 POSTS
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STEVE W.
- ✓ASE Certified Mechanic
- 15,200 POSTS
So it will start up but shuts down when you release the pedal. IE it will not idle. Have you had the battery disconnected or has it gone drained before this started? If yes then you just need to get it running and drive it so it can relearn the idle position.
If no then it is more than likely a dirty throttle body or IAC which is not allowing air through to let the engine idle. Here is a generic guide on cleaning them:
https://www.2carpros.com/articles/throttle-actuator-service
Be sure to use actual throttle body cleaner. Some of the more generic cleaners can damage the internal coating of the bore.
If no then it is more than likely a dirty throttle body or IAC which is not allowing air through to let the engine idle. Here is a generic guide on cleaning them:
https://www.2carpros.com/articles/throttle-actuator-service
Be sure to use actual throttle body cleaner. Some of the more generic cleaners can damage the internal coating of the bore.
Dec 30, 2017 at 8:06 AM
Thank you so much. I had two bad coil packs and a dirty throttle body. Took care of that and my vehicle is back to normal.
Dec 30, 2017 at 8:38 AM
STEVE W.
- ✓ASE Certified Mechanic
- 15,200 POSTS
Good to hear. Cleaning the throttle body is something that should be added to the maintenance list but it will not be.
Dec 30, 2017 at 11:28 AM
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