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When driving up a hill the engine backfires, loses power and stalls

Tiny
FAKEBEASTMAN
  • MEMBER
  • 2001 PONTIAC BONNEVILLE
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 240,000 MILES
My car backfires, stalls, slow down when going up a hill. I do not know what to do. I have changed the plugs and plug wires.
Wednesday, January 10th, 2018 AT 5:07 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,664 POSTS
Hello,

It sounds like you have a fuel pump going out but to be sure lets run this test to confirm the failure. Please follow this guide.

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

Please run down this guide and report back

Cheers, Ken
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Friday, January 12th, 2018 AT 11:32 AM
Tiny
FAKEBEASTMAN
  • MEMBER
  • 2 POSTS
Unfortunately I don't have access to those tools.
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Friday, January 12th, 2018 AT 5:18 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,664 POSTS
You can rent them for free at the auto parts store.
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Friday, January 12th, 2018 AT 5:34 PM

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