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RPM's spike when stopped or in Nuteral

Tiny
BKELLEY80
  • MEMBER
  • 1993 FORD MUSTANG
  • V8
  • 2WD
  • MANUAL
  • 48,000 MILES
93 Mustang LX 5.0
I had my idle set to about 1500 rpm, today when I was sitting at a light they shot up to 2500 rpm and wouldent go down even after I restarted it and turned the a/c off. I read somewhere this might b a leak in the header causing the sensor to over compensate? What you think?
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Thursday, August 18th, 2011 AT 4:07 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Clean out the idle air control valve and also look for a vacuum leak-
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Thursday, August 18th, 2011 AT 4:21 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Also go to this link: https://www.2carpros.com/articles/engine-idles-too-high
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Thursday, August 18th, 2011 AT 4:22 AM

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