1. Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online
    Online since 2004, we are the #1 Chevy Truck & SUV forum and user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free
    Registering is Free and Easy! Hope to see you on the forums soon!

My truck is Idling at high RPMs

Discussion in 'General Chevy & GM Tech Questions' started by gt1009, May 24, 2010.

  1. gt1009

    gt1009 New Member

    Just today my truck started idling at high RPMs, high enough to accelerate the truck in first gear. The truck is a 90 k1500 with a 350, 5 speed, 4wd. When the truck is in neutral, the shift light sometimes stays on also. I feel like it's some kind of a sensor issue somewhere. One last piece of info-if I shut the truck off and restart it returns to normal idle.
    Thanks guys
  2. scrappiedew1

    scrappiedew1 Rockstar

    idle air control valve "iac" they will do that you can try to take it out and clean it but that only last for a while
  3. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Yep IAC would be my first check.. My 1988 had a similar problem.

Share This Page