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Thread: TCC not Lockup at dyno

  1. 03-13-2021 #1
    Rayan_V8
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    TCC not Lockup at dyno

    Hi
    If any one has same this issue? my TCC not lock at dyno only, on the street fully commanded lock
    At dyno, I noticed the tcc line pressure working after 6100 RPM
    I get back street to test and back to dyno, the first run gain 40 hp, after that the TCC come unlocked even the curve lost 40HP again
    note: even on the street the 3rd and 2ed fully slip and tcc line pressure not work, after 4the gear work
    this issue I have it as many cars and many TC not only for this car

    can help

    Thanks
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    Last edited by Rayan_V8; 03-21-2021 at 12:03 PM.
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  2. 03-13-2021 #2
    kevin87turbot
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    Post your tune and we can help you with this issue.
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  3. 03-20-2021 #3
    Rayan_V8
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    Quote Originally Posted by kevin87turbot View Post
    Post your tune and we can help you with this issue.
    I posted now
    Thanks
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  4. 03-20-2021 #4
    Frost
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    Max out the apply-ramp. Use the regulator offset/gain to set min pressure.


    Or just use the scanner to lock the TCC on the dyno... the "button" will get behind it with full pressure. Make sure you follow with clicking unlock right after the pull / before anything else sans lifting throttle.
    Last edited by Frost; 03-20-2021 at 11:08 AM.
    Steve Williams
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  5. 03-20-2021 #5
    Rayan_V8
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    Quote Originally Posted by Frost View Post
    Max out the apply-ramp. Use the regulator offset/gain to set min pressure.
    I did other hpt the max pressure 110 PSI , still not fix
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  6. 03-20-2021 #6
    Rayan_V8
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    please check the VCM post
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  7. 03-20-2021 #7
    Frost
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    Quote Originally Posted by Rayan_V8 View Post
    please check the VCM post
    I did, and I told you what to change.
    Steve Williams
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  8. 03-20-2021 #8
    Rayan_V8
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    Quote Originally Posted by Frost View Post
    I did, and I told you what to change.
    I did it before your advice, no change
    Thanks
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  9. 03-20-2021 #9
    Rayan_V8
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    other car after I maxed at dyno, after full 100% tps the TC come Unlocked
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    • File Type: hpl 4.hpl (297.9 KB, 6 views)
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  10. 03-20-2021 #10
    Rayan_V8
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    here unlocked 2ed and 3rd gear with fully commanded locked in the street
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    • File Type: hpl 1.hpl (991.5 KB, 6 views)
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  11. 03-20-2021 #11
    Frost
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    Commanded gear control limits are stock 93 MPH / 5500 RPMs. If you are using the scanner to lock the TCC on the dyno in real time, the scanner controls will be ignored past those points. Set the MPH and RPM to max for those, and it should hold just fine with the scanner bi-di controls on the dyno.
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  12. 03-21-2021 #12
    Rayan_V8
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    Quote Originally Posted by Frost View Post
    Commanded gear control limits are stock 93 MPH / 5500 RPMs. If you are using the scanner to lock the TCC on the dyno in real time, the scanner controls will be ignored past those points. Set the MPH and RPM to max for those, and it should hold just fine with the scanner bi-di controls on the dyno.
    thanks for answer
    still I don't know why the second and third gear not lock TUTD
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