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Discussion in 'Volvo Forum' started by sammaxlee, Aug 16, 2024.

  1. sammaxlee

    sammaxlee Bobtail Member

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    Jun 20, 2019
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    I got 3 problems at same time (volvo DC 13 ENG)
    1st,not working speedometer
    2nd,rpm isn't going over 1500
    3rd,cruise control isn't working. please advise me what problems they are ,thanks
     
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  3. Lazer

    Lazer Road Train Member

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    Which problem occurred first, or did all 3 happen at the same time?
     
  4. sammaxlee

    sammaxlee Bobtail Member

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    Jun 20, 2019
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  5. Lazer

    Lazer Road Train Member

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    My guess would be a failed ‘speed sensor’, or bad connection to it. Had this happen years ago on an IH, it was that sensor that sits by the drive shaft at the rear of the transmission.
     
    ducnut Thanks this.
  6. sammaxlee

    sammaxlee Bobtail Member

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    Jun 20, 2019
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    Thanks for your quick response.
    I put new a speedsensor but still bad
     
  7. Ridgeline

    Ridgeline Road Train Member

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    CHECK YOUR GROUNDS
     
  8. sammaxlee

    sammaxlee Bobtail Member

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    Jun 20, 2019
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    I am sorry but how can I check Ground
    Could you explain about that
     
  9. OlegMel

    OlegMel Medium Load Member

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    Apr 8, 2023
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    First things first. Pull the codes from your dashboard. go to : diagnostics
    : view active faults
    And get all codes from every module. Especially brake ecu

    I had similar issue, and harness that goes to front right drive axle speed sensor had a factory crimp connector that corroded and lost connection. You’ll have to take apart about 2-3 feet of the harness
     
    ducnut Thanks this.
  10. goga

    goga Heavy Load Member

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    Harness is wires.
     
  11. AModelCat

    AModelCat Road Train Member

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    If you don't know how to check wiring, best take it to a shop. Electrical troubleshooting isn't something you can learn overnight.
     
    QUALITYTRUCK Thanks this.
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