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Pontiac
Bonneville
Engine
Symptoms
Low Power
When driving up a hill the engine backfires, loses power and stalls
2001 PONTIAC BONNEVILLE
240,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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 9:07 AM
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STRAILER
✓
Experienced Mechanic
55,583 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 3:32 AM
FAKEBEASTMAN
MEMBER
2 POSTS
Unfortunately I don't have access to those tools.
Jan 12, 2018 at 9:18 AM
STRAILER
✓
Experienced Mechanic
55,583 POSTS
You can rent them for free at the auto parts store.
Jan 12, 2018 at 9:34 AM
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