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1995 Chevy Silverado

Tiny
JIMMYDOWDEY
  • MEMBER
  • 1995 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • MANUAL
  • 18,800 MILES
My truck idles at 2000 rpms. If I turn the heater on it drops to about 1500. I replaced the throttle position sensor. It did not solve the problem. When you rev the motor it slowly decreeses rpms. What else can I do?
Wednesday, January 27th, 2010 AT 8:02 PM

2 Replies

Tiny
SCOTTY DEE
  • MECHANIC
  • 592 POSTS
Check for any vacuum leaks first.

Scotty
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Wednesday, January 27th, 2010 AT 8:47 PM
Tiny
SCOTTY DEE
  • MECHANIC
  • 592 POSTS
Defrost or Heater? Because when you turn on the defroster the ac has to run. The AC could be pulling it down more than it should.
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Wednesday, January 27th, 2010 AT 9:17 PM

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