2015 peterbilt 579

Discussion in 'Peterbilt Forum' started by AllenBWare, Jul 6, 2022.

  1. AllenBWare

    AllenBWare Bobtail Member

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    Jul 6, 2022
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    I have a 2015 Peterbilt 579. While driving, my dash, computer screen(radio) powers shuts off and engine stalls while driving. I don't know what to do. all the power in my cabins goes dark while I AM DRIVING!!!! It shuts down the engine as well. then after 5 or ten seconds, it powers back up.Yesterday this happened at 67 miles per hour. I had to come to a complete stop, then restart the engine. Has anyone heard of anything like this? I have a Cummings engine.
     
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  3. baha

    baha Road Train Member

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    Jul 25, 2013
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    Wires not connected correctly at battery to ecm or rubbed raw from batt to starter or to breakers in fuse panels, or from fuse panels to firewall connections on both sides `need to be ck for corr. and tightness on every connection from battery to ecm
     
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  4. Long FLD

    Long FLD Road Train Member

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    Mar 4, 2015
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    Just below the firewall, there will be a bunch of wires bundled together and tied to a metal bracket right where they curve under the front of the cab. Pull all those wires loose, cut them all apart from the big bundle, and start looking for bare spots.
     
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