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2022 T880 air ride dump PTO bypass.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by TJC Transport, Jun 3, 2022.

  1. Jun 3, 2022 #1
    TJC Transport

    TJC Transport Bobtail Member

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    over here
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    brand new T880 with X15 cummins and 4500RDS allison trans, and 8 bag air ride suspension.
    truck has in dash PTO switch. electric over air control.
    truck also has electric air dump switch in dash.
    problem is every time you put PTO on the air dumps out of rear suspension.
    is there any way to bypass the air dump like you used to be able to do with the old style air suspension?
     
    TJC Transport, Jun 3, 2022
    TJC Transport, Jun 3, 2022
    #1
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  3. Jun 4, 2022 #2
    Hammer166

    Hammer166 Crusty Information Officer

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    That's surely programmable in the controller. Or you could just unplug the dump valve.
     
    Hammer166, Jun 4, 2022
    Hammer166, Jun 4, 2022
    #2
  4. Jun 4, 2022 #3
    spsauerland

    spsauerland Road Train Member

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    Not able to bypass like old, need to make changes on PVP website and reflash with DAVIE on VECU trucks.
     
    spsauerland, Jun 4, 2022
    spsauerland, Jun 4, 2022
    #3
    TJC Transport, krupa530 and Goodysnap Thank this.
  6. Jun 4, 2022 #5
    TJC Transport

    TJC Transport Bobtail Member

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    Jul 27, 2019
    over here
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    Ok, thanks guys.
    Kinda what I was figuring that it has to be done through the computer.
     
    TJC Transport, Jun 4, 2022
    TJC Transport, Jun 4, 2022
    #5
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