Engine Codes 22, 32, 42

Discussion in 'Chevy C/K Truck Forum' started by okysmokey911, Jan 15, 2013.

  1. okysmokey911

    okysmokey911 Rockstar 100 Posts

    Noticed the other day that the truck is running terrible like it is misfiring. Got the codes 22, 32, and 42. I have several TPS's and tried all of them but I am still getting the code. EGR Valve is brand new and so is Distributor, wires, spark plugs, ignition module, spark control module. Made sure timing is where it is supposed to be. Cant really figure this one out so some help would be appreciated.
  2. mfleetwood

    mfleetwood Epic Member 5+ Years ROTM Winner 5000 Posts

    The only difference I can see that you didn't mention is the EST circuit grounded. Here is a list that may help you identify the problems unfortunately, this is not one of those comprehensive ones that list possible fixes.

    Hopefully, this bump will help in getting more feedback for you.

    http://www.extreme-check-engine-light-codes.com/GM OBD1 Decoder.htm
  3. okysmokey911

    okysmokey911 Rockstar 100 Posts

    Thank you for your help. I forgot that I unplugged the bypass wire to check the base timing and I did not disconnect the battery to reset the code. Will this give the code 42?

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