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Thread: Wiring differences truck to F body PCM?

  1. #31
    Joe (Moderator) joecar's Avatar
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    I notified the forum admin.

  2. #32
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    Thanks! I got an E-mail from Andrew who is assisting me with the problem.

  3. #33
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    Just to add a little information as to whats going on, here are some screen shots from my "scan tool". So the o2's are "reading" full rich and the fuel trims arent adjusting because the o2's arent ever being seen by the computer because it never goes into closed loop. Near as i can tell. Previously, running the ls1 tune, it would go into closed loop almost immediately and start adjusting the fuel trims down. With the ls1 tune, the o2's would bounce up and down just like a heart monitor as they should.

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  4. #34
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    Got a PM into miny now with Andrew's help!
    Last edited by y5mgisi; June 6th, 2013 at 01:36 PM.

  5. #35
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    Just for fun, here is a link to my swap thread.

    http://coloradok5.com/forums/showthread.php?t=294573

  6. #36
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by y5mgisi View Post
    Just for fun, here is a link to my swap thread.

    http://coloradok5.com/forums/showthread.php?t=294573
    Does this work ok (it sees the low pressure side of the pump when the TS opens):



  7. #37
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    Actually thats one of the things i intend to change. I have a problem with the truck getting hot on the highway. Im going to plug that hole and run the steam lin to the water pump like everyone else does and see if that helps.

  8. #38
    Lifetime Member EagleMark's Avatar
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    PM me your number. I'll be in Portland the 13th through..... we'll flash the F body tune back in. Unless someone tells you how to fix a truck tune.

  9. #39
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    Nice man! PM coming! Thanks AGAIN!

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