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Paccar no pulling power

Discussion in 'Peterbilt Forum' started by jmjfarms, Jan 5, 2020.

Page 1 of 6
  1. Jan 5, 2020 #1
    jmjfarms

    jmjfarms Bobtail Member

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    Jan 5, 2020
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    I’m not a truck driver. But I have a close friend that is. Pete with Paccar. Had truck for several years. Been awesome. Recently lost power while piling a load. Runs fine bobtail no torque loaded. After $11k worth of wiring harnesses, a new turbo, reprogramming (deleted several years back) it’s still not fixed. I ran across a post by spsauerland that caught my attention and there seems to be a wealth of knowledge here and I’m trying to find a way to help him get back to work. Thanks for any help.
     
    jmjfarms, Jan 5, 2020
    jmjfarms, Jan 5, 2020
    #1
    Another Canadian driver Thanks this.
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  3. Jan 5, 2020 #2
    x1Heavy

    x1Heavy Road Train Member

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    White County, Arkansas
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    You mentioned new programming deleted several years back the old OEM programming.

    I don't know about that.... most dealers and such will NOT touch a deleted truck.

    If a truck is tired, a dog, wont run like she used to etc.. toss her get another that will snort and run for you. Don't throw all that money trying to save old paint that needs to be retired anyway or regulated to show truck circuit or something else not involved with hauling loads.
     
    x1Heavy, Jan 5, 2020
    x1Heavy, Jan 5, 2020
    #2
    Another Canadian driver Thanks this.
  4. Jan 5, 2020 #3
    062

    062 Road Train Member

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    062, Jan 5, 2020
    062, Jan 5, 2020
    #3
    Another Canadian driver, pushbroom, spsauerland and 1 other person Thank this.
  5. Jan 5, 2020 #4
    spsauerland

    spsauerland Road Train Member

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    May 31, 2010
    West Harrison, In
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    What boost is it making under a hard pull? Turbo control after a delete leans heavily on feedback from the boost pressure sensor and exhaust gas pressure sensor before turbine. Has he verified they are not plugged and sensing tube from exh manifold to exh gas backpressure sensor is not plugged?
     
    spsauerland, Jan 5, 2020
    spsauerland, Jan 5, 2020
    #4
    Oxbow, Another Canadian driver, pushbroom and 1 other person Thank this.
  7. Jan 5, 2020 #5
    jmjfarms

    jmjfarms Bobtail Member

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    Jan 5, 2020
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    Being deleted is a problem. Dealer won’t look at it. 2012 model. MX13. EPA 13. No Codes. No CEL. 10 speed. Loaded it starts lugging in 10th and won’t hardly run above 45 mph. Shift to 9th and it will jump from 45 to 60 mph real quick then that’s it. Wasn’t doing this 3 months ago.
     
    jmjfarms, Jan 5, 2020
    jmjfarms, Jan 5, 2020
    #5
    Another Canadian driver Thanks this.
  8. Jan 5, 2020 #6
    jmjfarms

    jmjfarms Bobtail Member

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    Jan 5, 2020
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    I know they’re not plugged. Will work on making sure that they are working.
     
    jmjfarms, Jan 5, 2020
    jmjfarms, Jan 5, 2020
    #6
    Another Canadian driver Thanks this.
  9. Jan 5, 2020 #7
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    2012 would be an EPA 10 MX from factory. What are you pulling codes with?
     
    spsauerland, Jan 5, 2020
    spsauerland, Jan 5, 2020
    #7
    Another Canadian driver, pushbroom and 062 Thank this.
  10. Jan 5, 2020 #8
    spsauerland

    spsauerland Road Train Member

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    May 31, 2010
    West Harrison, In
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    It's a PITA, but run a wire through the sensing tube from the exhaust manifold to EBP sensor before turbine to verify it is clear.
     
    spsauerland, Jan 5, 2020
    spsauerland, Jan 5, 2020
    #8
    Another Canadian driver, pushbroom and 062 Thank this.
  11. Jan 5, 2020 #9
    pushbroom

    pushbroom Road Train Member

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    Whats the last 8 of the s/n? Just to make sure we are talking about the correct version. Pete or kw?
     
    pushbroom, Jan 5, 2020
    pushbroom, Jan 5, 2020
    #9
    Another Canadian driver, spsauerland and 062 Thank this.
  12. Jan 5, 2020 #10
    jmjfarms

    jmjfarms Bobtail Member

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    Jan 5, 2020
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    Will double check to see whether 10 or 13? Not sure what the shop in Savannah used to pull codes.
     
    jmjfarms, Jan 5, 2020
    jmjfarms, Jan 5, 2020
    #10
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