Starter? Batt?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Bernard D, Oct 25, 2020.

  1. Bernard D

    Bernard D Light Load Member

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    Jun 27, 2020
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    03 PETERBILT 379 C-15
    Jump started my truck this am.
    Waited a few min idled up to 750 or so not to high 65' out side.
    went to store for 20 min.
    come back heard loud winning on right side of truck
    fogured it was the starter being stuck on but i dident hear that when i first started and ideled it when i left.
    i shut it off .
    waited a few seconds turned key to acc. no noise just usual bells and rings ,went and turned it over and no noise just the starter soundind like the batteries are dead .
    Put a jump on it it turned over for a second thats it .
    when i hook jump cables up i get no action like little sparks when hooking cables up nothing now .not on either end if calels. Info please im loaded and unlod in am and load at 1 pm for washington .lol
     
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  3. stillwurkin

    stillwurkin Road Train Member

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    Are your battery connections good? Terminals clean? Has it been starting and turning engine over fast? I would say you are due for new batteries. How old are the batteries? What does your volt guage read? Noise from right side could be alternator. How old is it? Belts good? Sometimes lay my hand on each battery and see if one feels warm, if so replace it, and and the other 2, or 3 of its friends. Some just replace just one, but IMO they are just kidding themselves.
     
  4. truckdriver31

    truckdriver31 Road Train Member

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    my buddy had a driver to drive several hours with the starter gear stuck. needless to say it rounded the teeth on the flywheel
     
    stillwurkin Thanks this.
  5. Bernard D

    Bernard D Light Load Member

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    Jun 27, 2020
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    Grinding on right side was my PTO i vacumed and hit engadge to ckean under it and forgot, case solved on that deal.

    Batteries are 5 mo old new
    new starter .
    Thing is when i start my truck i wait for whissels and bells to clear and then i have to give the peddal a quick hit to get ALT guage to work .
    A nad when i do that my lights get alittle brighter ?
     
  6. Bernard D

    Bernard D Light Load Member

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    Jun 27, 2020
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  7. SmallPackage

    SmallPackage Road Train Member

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    Marion Texas
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    Had a few starters keep running when they go bad. Sometimes the solenoid contacts stick and cause this too. I have one in an old truck doing it now when first cold start. Gonna get it rebuilt soon.

    Temp gun the starter and see how hot it is after cranking the engine. Than see how hot it gets from the engine and exhaust temp around it. It may be cooking to death. If it is way hotter than the block and bell housing next to it that can be an indicator of it running on after startup or heat soaking.

    Be careful of them running like that. They will get hot and can start a fire.
     
  8. Bernard D

    Bernard D Light Load Member

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    18
    Jun 27, 2020
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    Staryer staying on.
    my power cable was not very tight and was sparking.
    coyldent see it in the day .
    the night i posted i went ti start it and it sparked goid.
    tightened up all nuts and bolts on stRter and no problens.
    idk seened to work.
     
  9. black_dog106

    black_dog106 Road Train Member

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    Thanks for the update. Always interested in hearing what the fix was.
     
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