Throttle body injectors are giving too much gas?

Tiny
5150JNB
  • MEMBER
  • 1989 CHEVROLET S-10
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 230,000 MILES
Truck starts and runs fine for the first 15 to 20 minutes and then floods out if I disconnect one injector it will crank back up and run.
Thursday, January 5th, 2023 AT 9:11 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
So, what happens is the fuel injector can short out causing the PCM to turn the injector on full blast, I would disconnect the injector and use an OHM's meter to check the windings, this guide can help:

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

The other options are the PCM injector driver is shorting out or you have a bad ground for the computer. Let us know what happens and please upload pictures or videos of the problem.
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Friday, January 6th, 2023 AT 12:23 PM

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