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Cummins M11 Celect Issues

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by High Stepping, May 14, 2024.

  1. May 14, 2024 #1
    High Stepping

    High Stepping Light Load Member

    51
    25
    Oct 29, 2020
    Mississippi
    0
    I’m working on a M11 Celect Cummins in a toter home. It had intermittent issues and then just wouldn’t start. We believed it to be an ecm issue, so that was replaced. Then it would start and run above 750rpm with a slight miss, but won’t idle. The owner had previously tried to get it going by changing the cam and coolant sensors. Any ideas what’s going on?
     
    High Stepping, May 14, 2024
    High Stepping, May 14, 2024
    #1
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  3. May 14, 2024 #2
    OlegMel

    OlegMel Light Load Member

    227
    357
    Apr 8, 2023
    0
    Sounds like a timing issue if it runs on higher rpm but won’t idle. Specially if the cam was replaced
     
    OlegMel, May 14, 2024
    OlegMel, May 14, 2024
    #2
  4. Jun 10, 2024 #3
    nwshippers

    nwshippers Bobtail Member

    1
    0
    Jun 10, 2024
    0
    I am have a same kind of issue runs for 6 hours (start and stop) then while driving it will suddenly go to idle and shut down. let it sit and it will start and run for a bit. not throwing or storing any codes. I have replaced cam sensor and updated wiring harness. fuel pressure and vacuum are all within parameters. any suggestions of where to look would be greatly appreciated
     
    nwshippers, Jun 10, 2024
    nwshippers, Jun 10, 2024
    #3
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