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2009 389 peterbilt, odometer recording more miles than driven

Discussion in 'Peterbilt Forum' started by Wvcoalpacker, Sep 26, 2018.

  1. Sep 26, 2018 #1
    Wvcoalpacker

    Wvcoalpacker Bobtail Member

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    Dec 22, 2017
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    My 09 389 peterbilt is clicking the miles off way to fast. It’s saying like 5 miles to every real mile. Has anybody ever had this problem and what was causing it?
    I replaced the isx cummins with a 04 bxs cat and ever since I did that the mileage has been doing this. Is there’s some parameter in the ecm that needs changed or maybe the paccar computer? Thanks!
     
    Wvcoalpacker, Sep 26, 2018
    Wvcoalpacker, Sep 26, 2018
    #1
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  3. Oct 3, 2018 #2
    Rounded_nut

    Rounded_nut Light Load Member

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    Feb 25, 2018
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    If you have Cummins insite hook up and check out the tire size, transmission ratios and I believe there is also a speedometer offset.
     
    Rounded_nut, Oct 3, 2018
    Rounded_nut, Oct 3, 2018
    #2
  4. Oct 3, 2018 #3
    Cam Roberts

    Cam Roberts Road Train Member

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    That would have to one small 1 foot tire to make every mile register as 5 miles. His speedometer would also be pegged becuase it would be thinking he is going 250mph
    Anyhow, yeah I would get that fixed ASAP
    Has to be computer error. Bring to your nearest mechanic
     
    Cam Roberts, Oct 3, 2018
    Cam Roberts, Oct 3, 2018
    #3
  5. Oct 3, 2018 #4
    Rounded_nut

    Rounded_nut Light Load Member

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    Good point, could be a odometer offset then, hopefully something cheap and easy.
     
    Rounded_nut, Oct 3, 2018
    Rounded_nut, Oct 3, 2018
    #4
    Cam Roberts Thanks this.
  7. Oct 3, 2018 #5
    Cam Roberts

    Cam Roberts Road Train Member

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    If he doesn’t get that fixed soon, his truck is gonna have a million miles on it very soon and it’s not gonna be worth squat. The issue will be hearsay
     
    Cam Roberts, Oct 3, 2018
    Cam Roberts, Oct 3, 2018
    #5
    Rounded_nut Thanks this.
  8. Jan 15, 2019 #7
    stkhlr

    stkhlr Bobtail Member

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    Jan 15, 2019
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    Im having the same problem with a 389 glider with a bxs. Wondering if you ever got it fixed and what the issue was.Mine spent 10 days at Peterbilt they never figured it out
     
    stkhlr, Jan 15, 2019
    stkhlr, Jan 15, 2019
    #7
  9. Dec 10, 2019 #7
    Wvcoalpacker

    Wvcoalpacker Bobtail Member

    23
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    Dec 22, 2017
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    It was the ecm was programmed for a different gear ratio. Get it synced with your trucks gear ratio.
     
    Wvcoalpacker, Dec 10, 2019
    Wvcoalpacker, Dec 10, 2019
    #7
  10. Dec 10, 2019 #8
    Wvcoalpacker

    Wvcoalpacker Bobtail Member

    23
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    Dec 22, 2017
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    It’s been since Jan so you’ve probably got it figured out by now huh? Sorry for the late response! Was it your ratio?
     
    Wvcoalpacker, Dec 10, 2019
    Wvcoalpacker, Dec 10, 2019
    #8
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