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cascadia dd15 cant go over 55mph

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 4noReason, Aug 3, 2018.

Page 3 of 5
  1. Dec 4, 2018 #21
    StillBreathin2018

    StillBreathin2018 Bobtail Member

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    Dec 4, 2018
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    diagnostic codes
     

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    StillBreathin2018, Dec 4, 2018
    StillBreathin2018, Dec 4, 2018
    #21
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  3. Dec 4, 2018 #22
    mhyn

    mhyn Road Train Member

    4,255
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    Dec 29, 2008
    Northridge, CA
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    what years is your truck ?
     
    mhyn, Dec 4, 2018
    mhyn, Dec 4, 2018
    #22
  4. Dec 4, 2018 #24
    StillBreathin2018

    StillBreathin2018 Bobtail Member

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    Dec 4, 2018
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    2012 Cascadia DD15
     
    StillBreathin2018, Dec 4, 2018
    StillBreathin2018, Dec 4, 2018
    #24
  5. Dec 4, 2018 #24
    mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    your batteries are ok ? when you start the engine voltage drop a lot? what shop checked wires? freightliner dealer ?
     
    mhyn, Dec 4, 2018
    mhyn, Dec 4, 2018
    #24
  7. Dec 4, 2018 #25
    StillBreathin2018

    StillBreathin2018 Bobtail Member

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    Dec 4, 2018
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    Local Shop. DEF/ DPF deleted long time ago.
     
    StillBreathin2018, Dec 4, 2018
    StillBreathin2018, Dec 4, 2018
    #25
  8. Dec 4, 2018 #26
    mhyn

    mhyn Road Train Member

    4,255
    4,515
    Dec 29, 2008
    Northridge, CA
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    oh no.
    I guess ACC module is malfunctioning. if is messing up can bus. I don't have suggestion for this one.
    https://ddcsn-ddc.freightliner.com/cps/rde/xbcr/ddcsn/1205-14.pdf

    something wrong with communication bus. check to see you have QUALCOMM connector hanging on sleeper wall outside. if water goes into that connector you will have this kind of issue..
     
    mhyn, Dec 4, 2018
    mhyn, Dec 4, 2018
    #26
  9. Dec 4, 2018 #27
    4noReason

    4noReason Road Train Member

    2,379
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    Nov 29, 2012
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    mine was ACM not communicating with MCM. i had a delete done so going to dealer was no go. so i had to have a place turn on def. turn it off. and ran power from acm to battery. works for now hopefully it stays good. thats issue with def delete. ur stuck with issue bcz final resort such as dealer wont do u no good
     
    Last edited: Dec 4, 2018
    Reason for edit: spelled dealer wrong
    4noReason, Dec 4, 2018
    4noReason, Dec 4, 2018
    #27
    mhyn Thanks this.
  10. Dec 4, 2018 #29
    StillBreathin2018

    StillBreathin2018 Bobtail Member

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    Dec 4, 2018
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    thanks for the quick response. God Bless
     
    StillBreathin2018, Dec 4, 2018
    StillBreathin2018, Dec 4, 2018
    #29
    mhyn Thanks this.
  11. Dec 4, 2018 #29
    StillBreathin2018

    StillBreathin2018 Bobtail Member

    13
    2
    Dec 4, 2018
    0
    4noReason. how do you turned on/off your DEF? did you unplugged or connected to the computer inorder to turn on & off. thanks
     
    StillBreathin2018, Dec 4, 2018
    StillBreathin2018, Dec 4, 2018
    #29
  12. Dec 4, 2018 #30
    4noReason

    4noReason Road Train Member

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    Nov 29, 2012
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    idk. some shop did it. its done via software
     
    4noReason, Dec 4, 2018
    4noReason, Dec 4, 2018
    #30
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