My truck stalls when idling at operating temperature?

1989 TOYOTA PICKUP
650,000 MILES • 2.2L • 4 CYL • 2WD • MANUAL
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ROGER LAWSON
  • MEMBER
  • 1 POST
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.
Dec 21, 2023 at 12:55 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,238 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

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Dec 22, 2023 at 3:55 AM
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