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Cascadia DT12 Transmission problem

Discussion in 'Freightliner Forum' started by Ea4transport, Sep 19, 2018.

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  1. Sep 19, 2018 #1
    Ea4transport

    Ea4transport Bobtail Member

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    Sep 19, 2018
    0
    Whenever the transmission is in Ecoast it has to try several times to put it back into a gear(when I press the brakes or accelerate)whether it be 12th or 11th gear. ( normal upshifting and downshifting is fine)
    Same thing happens when I turn the engine brake on and it tries to downshift the gear but it won't without several tries.

    So far I have changed the clutch, TCM , Slipt Pin, fly wheel, actuator and counter shaft clutch. We have reprogrammed it several times to recalibrate it.

    Any idea at this point what should I do except changing the whole Transmission.

    Thanks,
    Sunny
     
    Ea4transport, Sep 19, 2018
    Ea4transport, Sep 19, 2018
    #1
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  3. Sep 19, 2018 #2
    mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    I am just wondering how much have you spent on repairs? I mean changing the TCM , Slipt Pin, fly wheel, actuator, counter shaft clutch and for reprogramming , calibration.
     
    mhyn, Sep 19, 2018
    mhyn, Sep 19, 2018
    #2
    AlexD13 Thanks this.
  4. Sep 20, 2018 #3
    KB3MMX

    KB3MMX Road Train Member

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    Orrstown, PA
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    Here's a simple solution..... Disable Ecoast.

    How this is allowed in a AMT by law is beyond me!!

    This is the exact reason it will cost people their lives when it can't find a gear on a large downgrade !!
     
    KB3MMX, Sep 20, 2018
    KB3MMX, Sep 20, 2018
    #3
  5. Sep 26, 2018 #4
    Ea4transport

    Ea4transport Bobtail Member

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    Sep 19, 2018
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    I have spent a lot on it....I'm gonna have to replace the transmission.
     
    Ea4transport, Sep 26, 2018
    Ea4transport, Sep 26, 2018
    #4
  7. Sep 27, 2018 #5
    mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    I would change the truck.. get a truck with manual transmission.
     
    mhyn, Sep 27, 2018
    mhyn, Sep 27, 2018
    #5
  8. Sep 27, 2018 #6
    Ea4transport

    Ea4transport Bobtail Member

    4
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    Sep 19, 2018
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    And I thought I would get a reasonable solution here.

    Thanks
     
    Ea4transport, Sep 27, 2018
    Ea4transport, Sep 27, 2018
    #6
  9. Sep 27, 2018 #7
    skellr

    skellr Road Train Member

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    The Village, Portmeirion
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    Does it behave any better after you reprogram it? I mean for a short time afterwards?

    I drove a tuck that did that. It was from Omnitracs messing things up. I would unplug the data connection or the power from the QC black box and the problem would go away... Something wasn't right.
     
    skellr, Sep 27, 2018
    skellr, Sep 27, 2018
    #7
  10. Sep 27, 2018 #8
    Ea4transport

    Ea4transport Bobtail Member

    4
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    Sep 19, 2018
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    I switched the it with another truck and it did the same to the other truck. So it's confirmed now that it's the transmission itself.
     
    Ea4transport, Sep 27, 2018
    Ea4transport, Sep 27, 2018
    #8
  11. Sep 29, 2018 #9
    mhyn

    mhyn Road Train Member

    4,255
    4,502
    Dec 29, 2008
    Northridge, CA
    0
    men you must be from different world. the manufacturer does not know how to fix his product. why do you think you will find solution here ? get rid of that junk. you are not the only one who have problems with dt12 .
     
    mhyn, Sep 29, 2018
    mhyn, Sep 29, 2018
    #9
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