1987 GMC SIERRA IDLE WITH A/C ON

  • Tiny
  • Barecat6885
  • 1987 GMC SIERRA

Engine Performance problem
1987 GMC Sierra 6 cyl Two Wheel Drive Automatic 270000 miles

my truck idle starts to slow until my truck dies when I stop like at a red light. Or any time I stop, I can keep it running by shifting to neutral what is this/

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Monday, March 2nd, 2009 AT 10:50 AM

1 Reply

  • Tiny
  • Rasmataz
  • MEMBER

Check the idle air control valve/throttle position and manifold absolute pressure sensor/PCV and EGR valves to include a fuel pressure test

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Monday, March 2nd, 2009 AT 11:18 AM

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