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Peterbilt 94 Cat 3176 engine

Discussion in 'Off Road Haul Trucks' started by chore2319, Aug 8, 2022.

  1. chore2319

    chore2319 New Member

    Joined:
    Aug 8, 2022
    Messages:
    1
    Location:
    los angeles ca
    hey there ime new here, hoping to get some advice, i own a 1994 peterbilt dump truck with a cat 3176 engine, its the model with the fuel line running thu ecm. i powerwashed truck and it turned off. when i tried starting with ether it will run but will stop once ether runs out. i checked fuel and fuel pressure is good. i checked ecm 15amp fuse behind dashboard was blown and i replaced it, when i replaced and tried to start it blew again, next i seen a wire i had connected to chassy as ground now has 12v when i put a new fuse in ecm fuse spot. it comes out of ecm as pin#5. seen wiring diagram and its supposedd to be a ground wire, yett when i connect to ground it blows my 15amp acm fuse. any ideas why i have power to ground wire coming out of ecm? i checked ecm and pins look clean and spotless into ecm. i dont know what else to do. if anyone can help and advice works ille personally send some venmo cashapp or zelle money for advice.
     
  2. 56wrench

    56wrench Senior Member

    Joined:
    Dec 4, 2016
    Messages:
    1,412
    Location:
    alberta
    It sounds like you have moisture intrusion into the ecm harness connections or the wire harness itself
     
    Truck Shop likes this.