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Thread: ZF8 Problem after flash, stays in 3rd gear only...

  1. #1
    Tuner in Training
    Join Date
    Aug 2013
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    13

    ZF8 Problem after flash, stays in 3rd gear only...

    Hi everybody, I'm having issues with my tune, doesn't matters if I modify something as simple as the torque limiter or the whole upshift pressures and slip parameters... it's the same unless I put the stock file...

    There is a transmission DTC I should disable?

    The codes I'm getting after the TCM flash are U0140 U0402 U11BC ...

    I'd really appreciate your help...

  2. #2
    Advanced Tuner
    Join Date
    Nov 2017
    Posts
    815
    Some of the torque limiting tables can give you strange errors.

    Make double-sure that stuff is back to stock by starting over with your stock file before making changes. Just changing the numbers back doesn't always work right.
    If in doubt, multiply everything by 1.1.

  3. #3
    Tuner in Training
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    Aug 2013
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    I put the stock file and works good right away... but it doesn't matter what number I modify, my tcm or my jeep srt doesn't want anything different than the stock file...

  4. #4
    Tuner in Training
    Join Date
    Aug 2013
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    srt eli 6.4 Supercharged 091920 tcm.hptsrt eli 6.4 Supercharged 091920 tcm modded 2.hpt

    stock TCM file is the one that says 091920 TCM the other is one of the modded files I made with no luck

  5. #5
    Potential Tuner
    Join Date
    May 2022
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    Coming at this way late, but I just wrote a tune to my SRT grand cherokee, and the same thing happened. Did you ever resolve this?

  6. #6
    Advanced Tuner
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    Jan 2022
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    post tune and log
    [email protected]

    don tanklage

  7. #7
    Potential Tuner
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    May 2022
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    Still working my way through it, but it appears in my case that adjusting the max torque limit is what's causing my issue.

  8. #8
    Tuner
    Join Date
    Aug 2021
    Location
    Indianapolis Area
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    172
    Quote Originally Posted by Chubby Racer View Post
    Still working my way through it, but it appears in my case that adjusting the max torque limit is what's causing my issue.
    Could you share the latest tune?

    Thanks.
    DodgeBoy.

    YouTube: https://www.youtube.com/@dodgeboy2785