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When accelerating loses power and runs rough

Tiny
MICHALE
  • MEMBER
  • 1999 CHEVROLET TAHOE
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 212,000 MILES
When I give it gas it loses power and runs rough. Changed the spark plugs still no change.
Thursday, August 1st, 2019 AT 5:47 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi Michale,

There are a number of things that can cause this. We need to start with if there are any codes. If there are then we can work from there.

Here is a guide that will help point you in the right direction. Give this a read and let me know what you find.

https://www.2carpros.com/articles/engine-has-low-power-output
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Friday, August 2nd, 2019 AT 3:25 PM
Tiny
MICHALE
  • MEMBER
  • 8 POSTS
All four O2 sensors are bad and camshaft sensor location.
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Sunday, August 11th, 2019 AT 5:56 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi,

Attached are the o2 sensor locations and the camshaft sensor location which is the top rear center of the engine. Let me know if you need more information. Thanks
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Sunday, August 11th, 2019 AT 6:15 PM

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