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Engine hesitates and car loses power?

Tiny
AMM9G53N
  • MEMBER
  • 1988 OLDSMOBILE CUTLASS
  • V8
  • 2WD
  • AUTOMATIC
  • 103,000 MILES
At speeds above 50mph, the engine hesitates and loses power and the engine vibrates somewhat. Also, the engine loses a lot of power when driving uphill. I had the spark plugs and the gas filter changed, and also had the timing adjusted. But the problem persists?
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Saturday, December 15th, 2007 AT 8:01 AM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Have the fuel pressure tested, the pump or regulator needs to be replaced.
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Saturday, December 15th, 2007 AT 10:49 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,323 POSTS
Also, I would do a catalytic converter test because it sounds like it is clogged. Here is guide to help.

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

This guide can tell you more on the engine low power problems, these are the most common ones which makes this guide great.

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

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Thursday, October 10th, 2024 AT 5:01 PM

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