Volvo D12 power loos

Discussion in 'Ask An Owner Operator' started by Rale, Sep 26, 2020.

  1. Rale

    Rale Bobtail Member

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    Sep 26, 2020
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    Hi guys,
    I recently have changed all 4 drive brake d&s and soon after that my truck start loosing power RPM goose down and ABS light comes up just for one sec and goes back to normal each time I hit pat-hole or uneven surface!
    Does anyone have clue what that can be?
     
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  3. markk

    markk Light Load Member

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    52
    Nov 14, 2011
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    Sounds like an ABS problem to me. Perhaps applying the brake randomly when you hit a uneven surface. Did you get your ABS sensor put back in properly ?
    I had one on my trailer doing that. The sensor had fallen from the mount and was banging around inside the drum.
     
  4. Rale

    Rale Bobtail Member

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    1
    Sep 26, 2020
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    I did not check sensors at all, tomorrow I will stop by Volvo dealer to have them checked! Do you think that ABS sensor when kick in truck lose power for second?
     
  5. markk

    markk Light Load Member

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    Nov 14, 2011
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    Well I am no expert. It happened to me and I think that was why. Mechanic fixed the problem and I did not ask what it was. But seems like if the sensor is not mounted in , it would bounce around and make the ABS think you are slipping and apply brakes. That would slow you.
    Just a guess. Take a look at the sensor. It is just poked into a hole or mount right on inside of the wheel. I have had them push all way inside the drum and also fall outside from objects hitting the wire.
     
  6. Rale

    Rale Bobtail Member

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    Sep 26, 2020
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    I end up towing truck to Volvo dealer, turns out that cable which holds one of two switches on battery’s got damage and it was making shot and that’s it!
     
    markk Thanks this.
  7. markk

    markk Light Load Member

    231
    52
    Nov 14, 2011
    0
    trucks. so complicated these days. Everything is connected together somehow. Had lots of problems with cascadia "smart" truck.
     
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