02 Peterbilt 379 won't start.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by n1xrf, Apr 16, 2016.

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  1. n1xrf

    n1xrf Light Load Member

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    The problem was found. The constant battery hot wire was corroded and weakened about a foot from the exam inside the harness. It would hold enough current to light a test light but, not enough to power the ecm.
     
    n1xrf, Apr 21, 2016
    #21
    SAR, wore out and truckthatpassesyouby Thank this.
  2. nonsense007

    nonsense007 Light Load Member

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    I had my fuel pressure checked and it was marking zero, not sure how I was running though. Had the fuel pump replaced for $187 from Peterbilt, and now the pressure reads 90.
     
    nonsense007, Jun 11, 2016
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  3. nonsense007

    nonsense007 Light Load Member

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    Check the fuel pressure
     
    nonsense007, Jun 11, 2016
    #23
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