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Engine idle jumps from 900 to about 1,500 RPM's

Tiny
JOHN BLAILE
  • MEMBER
  • 1990 MITSUBISHI MONTERO
  • 3.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 133,000 MILES
I was going to check the timing as I already replaced the Throttle Position Sensor and Idle Control Valve. I saw a post about using a paper clip, but I can't find anything on the actually procedure. I will be cleaning the throttle body but thought I'd check everything.

Thanks.
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Monday, November 4th, 2019 AT 3:26 PM

2 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Yep. Here is the procedure including the paper clip.

Another thing to check is for vacuum leaks. Here is a guide that goes through how to do that:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know what you find and we can go from there. Thanks
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Monday, November 4th, 2019 AT 6:50 PM
Tiny
JOHN BLAILE
  • MEMBER
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Thank you.
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Wednesday, November 6th, 2019 AT 9:36 AM

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