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Loss of power between 40 and 50 MPH

Tiny
LUANNE LAGRECA
  • MEMBER
  • 2003 BUICK CENTURY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
After warms up it seems to lose power but not completely. If I accelerate it seems to help. I been told several possible causes. Trying to narrow it down I can't afford more than I actually need if possible. Thanks
Monday, March 15th, 2021 AT 9:31 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,140 POSTS
It sounds like you have a weak fuel pump or a clogged fuel filter but to be sure we should run the codes, also can you tell me when the last fuel filter change was? it is has been awhile here are instructions on how to change it in the diagrams below.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

and

https://www.2carpros.com/articles/engine-has-low-power-output

Check out the diagrams (below). Please let us know what happens.
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Wednesday, March 17th, 2021 AT 8:18 AM

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