Newest Gallery Photos

  1. Chevy Truck Forum

    Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online

    Online since 2004, we're the #1 Chevy Truck & SUV 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! Do it today and we'll see you on the forums soon!

chevy blazer engine problem

Discussion in 'GM Powertrain' started by dazmolek, Mar 9, 2011.

  1. dazmolek

    dazmolek New Member

    HI,
    I have an older chevy s-10 blazer with a 4.3L engine in it. I believe it is a 92 because it has a fuel injected vortec but i cant remember the year. The problem is that the engine will rev up and down once it is started (from idle to around 1500 rpms). I replaced the intake manifold gasket thinking it was sucking air from around the the gasket itself, and it did not help. Also if you put it in gear it wont move unless u have your foot on the gas, and it will still rev up and down. Please help! thanks
     
  2. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Sounds like the idle air control valve needs to be checked out. also if the check engine light is on you will want to pull the codes that will tell you more as well.
     

Share This Page