kenworth t660 2010 doesn't respond to throttle

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Zeta2023, Dec 7, 2023.

  1. Zeta2023

    Zeta2023 Bobtail Member

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    Dec 7, 2023
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    My Truck Kenworth T660 2010 is in gear but doesn't respond to throttle. When Truck is in Neutral, than throttle is working fine and has respond.
    Transmission auto Eaton 10speed
     
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  3. JB7

    JB7 Medium Load Member

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    Dec 13, 2022
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    See if you have any codes per the attachment. Does the truck move at all when in gear and idling?
    Don't forget the thumbs up/ Thank icon.
     

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  4. Zeta2023

    Zeta2023 Bobtail Member

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    Dec 7, 2023
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    Have Active Code

    Rail Position Sensor PID 60 FMI 2
     
  5. JB7

    JB7 Medium Load Member

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    Dec 13, 2022
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    See attached. The x-y shifter with the sensors is on top of the transmission.
     

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  6. Zeta2023

    Zeta2023 Bobtail Member

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    Dec 7, 2023
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    I replaced the transmission harness and all codes are gone except one .
    Now I have this code
    SID 54 FMI 5
    I am afraid that I have to replace the Inertia Brake. Any suggestions on this one ?
    Thank you again for previous replies, your help is very appreciated!
     
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  7. JB7

    JB7 Medium Load Member

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    Dec 13, 2022
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    You have an Ultrashift, Ultrashift PLUS came out in late 2009, mainly 2010. I tried to attach the whole file but it is too large. You can find it on the Eaton website.. SID 54, FMI 5 is Fault Code 44 and starts on page 160. See attached.
    Clear the code before you do any more troubleshooting or replace anything and see if it comes back. It may have set from the problems with the harness.
     

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    Last edited: Dec 12, 2023
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