Pop's and backfires when I push accelerator.
2500 Express Van
2500 Express Van
Aug 9, 2019 at 6:33 AM
Goes into limp mode while driving
2000 CHEVROLET EXPRESS
MICHAEL WINGLER
- MEMBER
- 2 POSTS
Advertisement
ASEMASTER6371
- ✓ASE Certified Mechanic
- 52,796 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
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
Aug 9, 2019 at 2:39 PM
Thanks for the recommendations, but I have figured out the issue; I had a dirty mass air sensor.
Aug 9, 2019 at 3:00 PM
ASEMASTER6371
- ✓ASE Certified Mechanic
- 52,796 POSTS
Okay, good deal.
Roy
Roy
Aug 9, 2019 at 3:05 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.