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RPM increased

Tiny
RAMESH SACHDEVA
  • MEMBER
  • 2003 CHEVROLET OPTRA
  • 1.8L
  • 4 CYL
  • TURBO
  • 4WD
  • MANUAL
  • 70,000 MILES
Sir, The RPM is increasing while in neutral and driving. It is going up 3000 to 4000 and some time it is normal.
Please note car has installed CNG kit.

Thanks for your help.

Ramesh
Sunday, February 11th, 2018 AT 11:44 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
It sounds like the PCM is going out but lets start by running the codes here is a guide to help us confirm the issue.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Tuesday, February 13th, 2018 AT 11:08 AM

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