1988 Chevy Truck Rough idle

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PAUL CHRISTENSEN
  • MEMBER
  • 1 POST
1988 Chevy Truck V8 Four Wheel Drive Automatic

My problem with my truck is that at idle it will idle down and then back up to idle, like the engine is rolling up and down. When you put it in drive to go it will act like the engine is not getting enough fuel. Aslong as the foot feed is down when moving it will gradually get up to speed, but still idling rough. I have replaced the fuel filter, air filter, and the fuel injectors. The problem is still there. Could you please advise me of the probable problem. Thanks.
Sep 16, 2009 at 9:54 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Sounds like you need to clean and test the idle air control valve
Sep 16, 2009 at 11:43 AM
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