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Goes into limp mode while driving

Tiny
MICHAEL WINGLER
  • MEMBER
  • 2000 CHEVROLET EXPRESS
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 116,000 MILES
Pop's and backfires when I push accelerator.

2500 Express Van
Friday, August 9th, 2019 AT 6:33 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

Is the check engine light on? If it is, do you know the code?

https://www.2carpros.com/articles/engine-backfires-while-running

Have you checked the fuel pressure?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

The backfiring may be from running lean or it may be a valve train issue. I would also do a compression test.

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy
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Friday, August 9th, 2019 AT 2:39 PM
Tiny
MICHAEL WINGLER
  • MEMBER
  • 2 POSTS
Thanks for the recommendations, but I have figured out the issue; I had a dirty mass air sensor.
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Friday, August 9th, 2019 AT 3:00 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, good deal.

Roy
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Friday, August 9th, 2019 AT 3:05 PM

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