1989 GMC TRUCK 1989 GMC CLASS C MALLARD SPRINTER CHEVY CHA

  • Tiny
  • Dollie
  • 1989 GMC Truck

1989 GMC Truck 85,652 miles

When I put it in park after driving it idles way to high. But after 2 or 3 minutes idles down.
Also when on a straight away and doing 55 mph the engine is running and sounding good, then all of a sudden the sound of the engine sounds like I put it in neautal and reved up the gas.

Got any ideas?

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Sunday, June 14th, 2009 AT 8:19 PM

1 Reply

  • Tiny
  • mickey-d
  • Member

I think your electric or vacuum idle solenoid needs to be adjusted, or lubed, and the other noise you hear is probably the clutch fan kicking in.

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Friday, January 1st, 2010 AT 12:11 AM

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