Intermittent loss of power or acceleration when taking off

Tiny
RHONDA BRADSHAW
  • MEMBER
  • 2001 GMC YUKON
  • 1,000,000 MILES
Sometimes my vehicle listed above (Denali) will lose acceleration while pressing the gas if I continue to press down on gas it backfires up into the engine or sometimes out the pipes. I can pump the gas pedal and it will gas speed and eventually it will at some point catch acceleration and go normally again. Sometimes quickly sometimes it doesn't.
Saturday, July 17th, 2021 AT 3:24 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

There are several reason you can experience this type of issue. It could be lack or fuel or improper spark or multitude of other reasons.
Is there any trouble code? If so do you know what they are?
First step would be to get the vehicle scanned. Which could point us to the right direction.

https://youtu.be/vMwTzURWXmk

You might find this article helpful:

https://www.2carpros.com/articles/symptoms-of-low-engine-power

https://youtu.be/U1RoG3I-Oww

Let me know of any questions.
Thank you.
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Saturday, July 17th, 2021 AT 3:55 PM

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