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2017 4700 DD13 de-rating to 75%

Discussion in 'Western Star Forum' started by TimmyGitAtIt, Oct 31, 2023.

  1. Oct 31, 2023 #1
    TimmyGitAtIt

    TimmyGitAtIt Bobtail Member

    1
    0
    Oct 30, 2023
    0
    This isn't my normal truck, so I'm not super savvy on it. It'll be pulling along fine on a hill, showing 99-100% engine load, then it's as if it enters a limp mode, and the engine load drops to 75% until I stop and turn it off for a minute or two.

    I don't have a scan tool, and the company I work for can be difficult when it comes to checking out something like this... (e.g. is it still pulling freight? Keep at her, then!)

    I'm pretty familiar with Cummins motors, I just don't know where to start looking.

    Any help is appreciated. Thanks!
     
    TimmyGitAtIt, Oct 31, 2023
    TimmyGitAtIt, Oct 31, 2023
    #1
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  3. Oct 31, 2023 #2
    RocketyMan

    RocketyMan Medium Load Member

    534
    316
    Jun 5, 2015
    0
    Check the basics first. You look at the air filter? Maybe it's partially clogged. Seen this happen before.

    Also, if you have any cummins codes, I can look that up. Just need the ESN.
     
    RocketyMan, Oct 31, 2023
    RocketyMan, Oct 31, 2023
    #2
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