Bucking problems

Tiny
JENNIFER STARK
  • MEMBER
  • 2001 PONTIAC GRAND PRIX
  • 3.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 288,848 MILES
When I am driving down the road it starts bucking, but it does not do it all the time. We cannot figure out what is causing it.
Sunday, November 4th, 2018 AT 12:50 AM

1 Reply

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

It could be ignition issue or a clogged exhaust.

Possible failures:

1. Spark plugs/wires.

2. Coils or a module.

3. Low fuel pressure.

4. Clogged catalytic converter.

5. Transmission shutter.

All these need to be checked.

Roy

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Monday, November 5th, 2018 AT 3:27 AM

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