Engine brake

Discussion in 'Volvo Forum' started by Vcturner, Feb 6, 2020.

  1. Feb 6, 2020 #1
    Vcturner

    Vcturner Bobtail Member

    1
    0
    Feb 6, 2020
    0
    My engine brake in my 1999 770 volvo will not go off. I have disconnected the wire to the switch and check for fuses. There was not a fuse in the engine retarder position. What could this be
     
    Vcturner, Feb 6, 2020
    Vcturner, Feb 6, 2020
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Feb 7, 2020 #3
    401-Alex

    401-Alex Light Load Member

    261
    280
    Nov 25, 2013
    401
    0
    In a Volvo engine such as a d12 the engine brake is operated by a solenoid it could have shorted in the open position. It is located under the valve cover
     
    401-Alex, Feb 7, 2020
    401-Alex, Feb 7, 2020
    #3
    x1Heavy Thanks this.
  4. Feb 29, 2020 #3
    Chubby Fly

    Chubby Fly Medium Load Member

    569
    797
    Nov 25, 2019
    0
    Busted plunger spring in one of the engine brake assembly’s. Pull the valve covers with engine running and see which plunger is contacting the exhaust valve
     
    Chubby Fly, Feb 29, 2020
    Chubby Fly, Feb 29, 2020
    #3
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.