1992 GMC

  • Tiny
  • 1992 GMC
  • 1992 GMC Sierra
  • 6 CYL
  • 2WD
  • automatic
  • 170,000 miles

My 1992 GMC 1500 sounds like a jet engine taking off. Could that be a worn fan clutch.

Thursday, March 3rd, 2011 AT 9:52 PM

5 Answers

  • Tiny
  • JDL
  • Expert
  • 16,236 posts

My hearing is no good. I'm not good with noises. Your rpms are ok? Exhaust is ok?

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Thursday, March 3rd, 2011 AT 10:02 PM
  • Tiny
  • 1992 GMC
  • Member

The exaust is good but high rpm.

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Friday, March 4th, 2011 AT 8:17 PM
  • Tiny
  • JDL
  • Expert
  • 16,236 posts

Any mil codes? Clean the throttle-body, check iac/idle air control. Check for vacuum leaks. If you block the mouth of the throttle-body any effect on the idle?

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Friday, March 4th, 2011 AT 8:41 PM
  • Tiny
  • 1992 GMC
  • Member

It was the fan. And I replaced the valve stem seals and now it smokes worse than it did before, I was told that will go away?

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Monday, March 7th, 2011 AT 11:33 PM
  • Tiny
  • JDL
  • Expert
  • 16,236 posts

Glad you got it going your way.

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Tuesday, March 8th, 2011 AT 3:06 PM

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