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Truck won't even grunt with new batteries

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by wjhuskey, Aug 29, 2023.

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  1. Aug 29, 2023 #1
    wjhuskey

    wjhuskey Bobtail Member

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    Hello. I have a 1993 Peterbilt 379 with 3406C Cat converted to a B model. It has been setting for a few years as it's been a project truck. Its got new batteries and new battery cables on it... tried to start it and it wouldn't even grunt. Check starter? Solenoid? Solenoid relay??? Thanks in advance.
     
    Last edited: Aug 29, 2023
    wjhuskey, Aug 29, 2023
    wjhuskey, Aug 29, 2023
    #1
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  3. Aug 29, 2023 #2
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    How bout a pipe wrench and see if it turns over
     
    Big Road Skateboard, Aug 29, 2023
    Big Road Skateboard, Aug 29, 2023
    #2
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  4. Aug 29, 2023 #3
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Did you bypass the switch and use a hot jump wire to the solenoid and/or starter motor?
     
    Diesel Dave, Aug 29, 2023
    Diesel Dave, Aug 29, 2023
    #3
  5. Aug 29, 2023 #4
    wjhuskey

    wjhuskey Bobtail Member

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    You mean to see if the engine is locked up?
     
    wjhuskey, Aug 29, 2023
    wjhuskey, Aug 29, 2023
    #4
    LoneRanger, Flat Earth Trucker, Diesel Dave and 1 other person Thank this.
  7. Aug 29, 2023 #5
    wjhuskey

    wjhuskey Bobtail Member

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    Nov 1, 2014
    Arkansas
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    No I just hooked up the batteries the normal way. I'm not a very good mechanic and have had a very hard time getting a mobile mechanic to show up...
     
    wjhuskey, Aug 29, 2023
    wjhuskey, Aug 29, 2023
    #5
  8. Aug 29, 2023 #6
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Yes
     
    Big Road Skateboard, Aug 29, 2023
    Big Road Skateboard, Aug 29, 2023
    #6
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  9. Aug 29, 2023 #7
    wjhuskey

    wjhuskey Bobtail Member

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    Good idea
     
    wjhuskey, Aug 29, 2023
    wjhuskey, Aug 29, 2023
    #7
  10. Aug 29, 2023 #8
    LoneRanger

    LoneRanger Road Train Member

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    Does the starter even click? Or try to start it?
     
    LoneRanger, Aug 29, 2023
    LoneRanger, Aug 29, 2023
    #8
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  11. Aug 29, 2023 #9
    wjhuskey

    wjhuskey Bobtail Member

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    Nov 1, 2014
    Arkansas
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    Nope, no sound at all. The lights on the dash come on though.
     
    wjhuskey, Aug 29, 2023
    wjhuskey, Aug 29, 2023
    #9
  12. Aug 29, 2023 #10
    LoneRanger

    LoneRanger Road Train Member

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    If the starter ain’t making sounds, then that’s your first spot to look into. Wires might be cut, eaten through, or even disconnected. Also fuses pulled. Many issues.

    even a seized motor doesn’t stop the starter from trying to engage.
     
    LoneRanger, Aug 29, 2023
    LoneRanger, Aug 29, 2023
    #10
    Big Road Skateboard and wjhuskey Thank this.
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