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RPM too high

Tiny
AURAGAL
  • MEMBER
  • 2001 CHRYSLER PT CRUISER
  • 2.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 147,000 MILES
My car has a RPM of 3 when traveling at seventy mph and realized that while driving a different vehicle at the same speed but shows RPM of 2. What would be the issues with it and how can it be fixed?
Saturday, March 17th, 2018 AT 8:08 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you do the suggestions I gave you in your other post?

Roy
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Saturday, March 17th, 2018 AT 11:23 AM
Tiny
AURAGAL
  • MEMBER
  • 2 POSTS
I do not know which post your talking about. My question is the first post I have written on this site.
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Saturday, March 17th, 2018 AT 2:33 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Sorry, must have had an identical response for the same type of car.

Look for vacuum leaks from any hoses on the motor. A vacuum leak will cause this issue.

The throttle body can be dirty not allowing the plate to totally close as well. Clean it with some carburetor cleaner on a rag. Make sure all the carbon is gone.

Lastly, there is an idle air control valve that controls engine speed. If this was an issue it would turn on the check engine light and set a code.

Roy
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Saturday, March 17th, 2018 AT 4:00 PM

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