Power loss after engine has warmed up

1994 CHEVROLET SUBURBAN
250,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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GRIZZLYDAN
  • MEMBER
  • 1 POST
My vehicle loses power while driving when it warms up but when I stomp the gas it goes back to normal for about under a minute then starts losing power again.
Feb 10, 2021 at 4:09 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

That could be a few different things. It could be related to fuel pressure, a partially plugged catalytic converter, and so on. Do me a favor. I need you to check for diagnostic trouble codes. This has an OBD 1 system which doesn't require a scan tool to retrieve codes. All you will need is a small jumper wire or even a paper clip.

Here is a link that explains how to do it. If you find there are codes, let me know what they are and I'll be better able to direct you.

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Let me know what you find or if you have other questions.

Take care and God Bless,

Joe
Feb 11, 2021 at 8:32 AM
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