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
  • 13,143 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?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, September 20th, 2018 AT 1:39 PM

Please login or register to post a reply.

Related Engine Revs Up Content

Idle Air Control Motor Replacement
GUIDE
Idle Air Control Motor Replacement
The idle air control motor or idle speed control motor is designed to adjust the air flow into the intake manifold at engine idle. Engine idle speed is monitored by the PCM...
VIEW MORE

Sponsored links