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peterbilt 388 no quages and wont start

Discussion in 'Peterbilt Forum' started by riffd, Jun 26, 2014.

  1. Jun 26, 2014 #1
    riffd

    riffd Bobtail Member

    1
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    Jun 26, 2014
    0
    quages not operating and it will not start fuses are good and you can jump the starter and it will run but instrument cluster doesn't operate at all
    we have power to instrument cluster and ground any ideas
     
    riffd, Jun 26, 2014
    riffd, Jun 26, 2014
    #1
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  3. Jun 26, 2014 #2
    70s_driver

    70s_driver Medium Load Member

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    May 4, 2014
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    Theres a relay in a 379 in the panel on the left side of the steering wheel. When it went bad, my 379 would do the same thing. I wont guarantee you its in that location on yours but that could be your problem?
     
    70s_driver, Jun 26, 2014
    70s_driver, Jun 26, 2014
    #2
  4. Jun 26, 2014 #3
    70s_driver

    70s_driver Medium Load Member

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    May 4, 2014
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    On mine, it was bolted down just inside the dash behind that dash panel.
     
    70s_driver, Jun 26, 2014
    70s_driver, Jun 26, 2014
    #3
  5. Jun 26, 2014 #4
    gcoffee

    gcoffee Bobtail Member

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    Jun 15, 2014
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    Check the mega fuse in the battery box. The starter will still jump with that fuse out but there will not be power to the ECM.
     
    gcoffee, Jun 26, 2014
    gcoffee, Jun 26, 2014
    #4
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