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Warms up and idles very long it will stall?

Tiny
SELIGMITE
  • MEMBER
  • 1986 CHEVROLET CORVETTE
  • 5.7L
  • V8
  • RWD
  • AUTOMATIC
  • 135,000 MILES
The car runs fine when it is cold but when it warms up and idles very long it will die. It acts like it is flooding. Also if I can keep it from dying and accelerate it will stumble a few times before coming out of it. I have replaced the fuel pump, fuel pressure regulator, TPS, EGR valve, and oil pressure sensor.
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Tuesday, January 20th, 2015 AT 9:33 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and check fuel pressure with a gauge should be 41-47 psi do that first
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Tuesday, January 20th, 2015 AT 12:38 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,490 POSTS
To me it sounds like a vacuum leak, or a slow IAC motor, here is a guide to help.

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

this is the location of the IAC motor so you can swap it out. Also, I would service the throttle body.

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

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Sunday, October 13th, 2024 AT 11:45 AM

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