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2011 Mack CXU600. no crank no start.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by PatrickJ07, Jul 10, 2019.

Page 2 of 2
  1. Jul 22, 2019 #11
    PatrickJ07

    PatrickJ07 Bobtail Member

    28
    8
    Oct 11, 2018
    upstate New York
    0
    got news back from the dealership, turns out the computer was the culprit, however the new one I installed that they said was programmed was not. simple programming of the new ECU and it fired right up
     
    PatrickJ07, Jul 22, 2019
    PatrickJ07, Jul 22, 2019
    #11
    QUALITYTRUCK, spsauerland and Socal Xpress Thank this.
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  3. Apr 25, 2023 #12
    Mr Bob

    Mr Bob Light Load Member

    262
    81
    Mar 17, 2015
    0
    i know this is an old thread but the problems are the same. i just came across 2 newer macks that wont crank or start. one has new batteries and will start on either and bypassing the relay on the starter. the other was starting and decided to join the dead sister. the battery voltage was low but even jumping it didnt work. are the basic starting circuits the same as the older trucks with ecu providing ground to start circuit?
     
    Mr Bob, Apr 25, 2023
    Mr Bob, Apr 25, 2023
    #12
  4. Apr 26, 2023 #14
    PatrickJ07

    PatrickJ07 Bobtail Member

    28
    8
    Oct 11, 2018
    upstate New York
    0
    Are the battery cables nice and clean?
    What's the vehicle info, i can look up the diagram for you.
     
    PatrickJ07, Apr 26, 2023
    PatrickJ07, Apr 26, 2023
    #14
  5. Apr 26, 2023 #14
    Mr Bob

    Mr Bob Light Load Member

    262
    81
    Mar 17, 2015
    0
    2020 anthem mp8 500k miles.
    2018 cxu612 mp7 400k miles.
     
    Mr Bob, Apr 26, 2023
    Mr Bob, Apr 26, 2023
    #14
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