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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

    Aug 8, 2022
    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

    Dec 4, 2016
    It sounds like you have moisture intrusion into the ecm harness connections or the wire harness itself
    Truck Shop likes this.