overheating, high idle

136,000 MILES • 4.3L • 6 CYL • 2WD • AUTOMATIC
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MARLA CHOI
  • MEMBER
  • 1 POST
what should my idle be when cold? my idle is high 1900 rpm if I adjust it correctly will that stop my car from overheating?
Dec 26, 2016 at 12:57 PM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,367 POSTS
No, high idle should not lead to an overheat. It sounds more like you have a vacuum leak that is causing the high idle. Check for cracked/broken vacuum lines first. If you do not find any clean the IAC valve and the throttle body.
Dec 26, 2016 at 5:06 PM
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