1988 CHEVY TRAILBLAZER BACK FIREING AND HIGH IDLE

  • Tiny
  • jackie byrd
  • 1988 Chevrolet Trailblazer

Engine Mechanical problem
1988 Chevy Trailblazer 6 cyl Two Wheel Drive Automatic

When I start the motor it is at a high idle and then it goes to a slower idle then back fires in the throtle body and motor dies

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Tuesday, September 7th, 2010 AT 4:02 PM

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  • Tiny
  • rasmataz
  • Member

Clean out the idle air control valve and test the throttle position and manifold absolute pressure sensors and also check the fuel pressure and look for vacuum leaks-

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Tuesday, September 7th, 2010 AT 6:37 PM

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