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

2001 PONTIAC BONNEVILLE
240,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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FAKEBEASTMAN
  • MEMBER
  • 2 POSTS
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.
Jan 10, 2018 at 5:07 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 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
Jan 12, 2018 at 11:32 AM
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FAKEBEASTMAN
  • MEMBER
  • 2 POSTS
Unfortunately I don't have access to those tools.
Jan 12, 2018 at 5:18 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
You can rent them for free at the auto parts store.
Jan 12, 2018 at 5:34 PM