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!

91 Chevy 1/2 ton 4x4, 5 speed, computer chip

Discussion in 'Chevy C/K Truck Forum' started by rbaker59, Feb 10, 2013.

Random Gallery Photos

  1. rbaker59

    rbaker59 New Member

    I just bought a 91 Chevrolet, 5 speed, 4 x 4. The original computer was not with it. The previous owner had put a computer in it from a van. It kept gas fouling the plugs. After changing all the sensors and distributor, it was still gas fouling the plugs. I put a hyper tech performance chip in and it seems to be running better, not fouling the plugs, shift light stays on and cuts out when shifted into overdrive. Gears 1 thru 4 run fine. Any suggestions about the overdrive?

Share This Page