Could dead batteries cause a truck to shut down?

Discussion in 'Ask An Owner Operator' started by Jardon, Sep 20, 2016.

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  1. Sep 20, 2016 #1
    Jardon

    Jardon Bobtail Member

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    I got picked a 2005 Freightliner with a CAT engine.. It took a jump to get it running and shut down after about 10mins. Called road service and they suspect batteries or alternator. Alternator showed it was charging when the engine started. Could dead batteries shut an engine down?
     
    Jardon, Sep 20, 2016
    Jardon, Sep 20, 2016
    #1
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  3. Sep 20, 2016 #2
    wore out

    wore out Numbered Classic

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    Absolutely
     
    wore out, Sep 20, 2016
    wore out, Sep 20, 2016
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  4. Sep 20, 2016 #3
    TallJoe

    TallJoe Road Train Member

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    Sure, they could.
     
    TallJoe, Sep 20, 2016
    TallJoe, Sep 20, 2016
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  5. Sep 20, 2016 #4
    AModelCat

    AModelCat Road Train Member

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    Yeppers! We once drove a Ford Dually 6L with a dead alternator by hooking jumper cables to a battery in the truck box so we could keep the engine running lol.
     
    AModelCat, Sep 20, 2016
    AModelCat, Sep 20, 2016
    #4
  7. Sep 20, 2016 #5
    77fib77

    77fib77 Road Train Member

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    Yes. If you got a reefer you can borrow it's juice.
     
    77fib77, Sep 20, 2016
    77fib77, Sep 20, 2016
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  8. Sep 20, 2016 #6
    Studebaker Hawk

    Studebaker Hawk Road Train Member

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    The alternator needs a set of charged batteries in the circuit so it can begin the charge cycle.
     
    Studebaker Hawk, Sep 20, 2016
    Studebaker Hawk, Sep 20, 2016
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  9. Sep 20, 2016 #7
    Jardon

    Jardon Bobtail Member

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    Would that be either the battery or alternator?
     
    Jardon, Sep 20, 2016
    Jardon, Sep 20, 2016
    #7
  10. Sep 20, 2016 #8
    Old Man

    Old Man Road Train Member

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    I think the ecm shuts off around 9 volts.
     
    Old Man, Sep 20, 2016
    Old Man, Sep 20, 2016
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  11. Sep 20, 2016 #9
    Friday

    Friday Road Train Member

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    Could be either. Since alternator was showing that it was charging, probably the batteries. But I'm just a round thingie in front of me holder, I'd get a second opinion
     
    Friday, Sep 20, 2016
    Friday, Sep 20, 2016
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  12. Sep 21, 2016 #10
    ExOTR

    ExOTR Windshield Chipper Extraordinaire

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    If a battery shorts then yea, it could shut down the ecu. Did you lose all power? I.E. Headlights and fan motors shut down also?
     
    ExOTR, Sep 21, 2016
    ExOTR, Sep 21, 2016
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