Hesitation/fluctuation of RPM's when driving

Tiny
FARR2007
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 285,000 MILES
When driving the RPM's fluctuate and car jerks up and down.
Monday, September 17th, 2018 AT 6:31 AM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,489 POSTS
Is the check engine light on? It could be various things but a misfire would be the most likely. That should trigger the light and set a code.
Does it do it constantly, even with it out of gear?
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Thursday, September 20th, 2018 AT 1:39 PM

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