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My truck stalls when idling at operating temperature?

Tiny
ROGER LAWSON
  • MEMBER
  • 1989 TOYOTA PICKUP
  • 2.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 650,000 MILES
If I'm driving it at operating temperature it runs like a charm except for the occasional backfire and flames. It had the top end rebuilt along with the manual fuel pump being replaced. The brake light is on and I was told it was a vacuum leak but couldn't find a bad vacuum.
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Thursday, December 21st, 2023 AT 8:55 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,656 POSTS
This sounds like the throttle body and IAC motor needs to be serviced. Here are three guides to help us see what's going on:

https://www.2carpros.com/articles/idle-air-control-valve-service

and

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

and

https://www.2carpros.com/articles/why-does-my-car-engine-stall-when-hot-and-how-can-i

Check out the images (below) to see how the job is done on your truck. Please upload pictures or videos of the problem so we can see what's going on.
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Friday, December 22nd, 2023 AT 11:55 AM

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