rough Idle and get so low it knocks off while driving.
Oct 5, 2023 at 3:27 AM
rough Idle and get so low it knocks off while driving?
1990 CHEVROLET LUMINA
TERRENCE EWELL DUGAN
- MEMBER
- 5 POSTS
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Hi Terrence,
Yes, the engine can knock when the idle speed gets too low, I would check for vacuum leaks and service the throttle body and idle air control valve, here are guides to help you fix it:
https://www.2carpros.com/articles/throttle-actuator-service
and this guide use when the engine is cold only:
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
https://www.2carpros.com/articles/idle-air-control-valve-service
Check out the images (below). Please let us know how it goes.
Yes, the engine can knock when the idle speed gets too low, I would check for vacuum leaks and service the throttle body and idle air control valve, here are guides to help you fix it:
https://www.2carpros.com/articles/throttle-actuator-service
and this guide use when the engine is cold only:
https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge
https://www.2carpros.com/articles/idle-air-control-valve-service
Check out the images (below). Please let us know how it goes.
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Oct 5, 2023 at 5:53 AM
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