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Thread: Crankshaft System Variation Learn Procedure

  1. #11
    Join Date
    Sep 2008
    Location
    Lakes Region NH
    Posts
    262
    Red, I have a tuned PCM and never did the crank relearn, however my truck has no DTC's. Ive checked it with Auto Enginuity as well as a pocket scan tool. Will performing a crank re-learn waken anything up? Make any difference? The PCM is a second PCM, not my stock unit.
    Quote Originally Posted by ff_jeff View Post
    Ill grab some ditch to get a cat...
    03 Silverado ECSB - SOLD
    06 CCSB Duramax - 12 second tow pig

  2. #12
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    It should not make any difference if you do a crank relearn on an engine with no codes. The most it might do is reset the PCM to as new installed and then it will have to relearn all functions all over again, losing you power and fuel mileage for a little while.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #13
    Join Date
    Sep 2008
    Location
    Lakes Region NH
    Posts
    262
    Thanks! Good to know, I learn something new here every day.
    Quote Originally Posted by ff_jeff View Post
    Ill grab some ditch to get a cat...
    03 Silverado ECSB - SOLD
    06 CCSB Duramax - 12 second tow pig

  4. #14
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,438
    It can learn itself by driving but usually the CKP relearn is needed if there are DTC's.

  5. #15
    Join Date
    Mar 2006
    Posts
    937
    anyone in NW houston neeing the relearn just pm me.

  6. #16
    Join Date
    Mar 2007
    Posts
    1,729
    in HPtuners, my tam never goes up 86 F so it never let me do the relearn procedure......anyone can help me please?

  7. #17
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    TAM? what is that? If it is the water temp, go to you local electronics store and get a variable resistor, disconnect the water temp sensor and wire it in. Turn on the scanner and see what temp it shows and then adjust it to get it to the temp you're wanting.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  8. #18
    Join Date
    Mar 2007
    Posts
    1,729
    Yes, Temp.....but my tem sensor in the OEM gauge is OK, and in the scan also is above 185......only in the bi-controls only rise to 86F like if it is reading in C instead of F.

    Radio Shack will sell what u mention?

  9. #19
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    yes, sounds like you need to configure your control settings to NON-metric scale output
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  10. #20
    Join Date
    Mar 2007
    Posts
    1,729
    it is in Imperial, not metric !!!!!

    Any other place to look?

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