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2016 Coronado glider Intermittent No crank

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by dberset, Dec 3, 2022.

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  1. Dec 3, 2022 #1
    dberset

    dberset Bobtail Member

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    Jan 12, 2020
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    2016 Coronado glider, intermittent no crank. It might go for days with no trouble. I’ve tested the ignition switch itself to see if it has good contact through the start terminal and it does but no start signal at the mag switch. I’ve been using needle nose pliers to jump the terminals to get it to start. Any help would be appreciated.
    Thanks
     
    dberset, Dec 3, 2022
    dberset, Dec 3, 2022
    #1 + Quote Reply
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  3. Dec 4, 2022 #2
    xsetra

    xsetra Road Train Member

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    I don't know the circuits of your truck. If you have power out of your ignition switch to the mag switch. You have to jump the mag switch terminals to start.
    I think your mag switch is bad.
    Or do you mean you are jumping the terminals on the starter solenoid?

    Did you disconnect the wires and clean them. Corrosion penetrating the terminal ends could be your problem or a broken wire inside the insulating jacket you will not see.
    Good luck.
     
    xsetra, Dec 4, 2022
    xsetra, Dec 4, 2022
    #2 + Quote Reply
    Oxbow Thanks this.
  4. Dec 4, 2022 #3
    Raffito

    Raffito Light Load Member

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    You may also want to check and clean all the batteries terminals. All ground cables.
     
    Raffito, Dec 4, 2022
    Raffito, Dec 4, 2022
    #3 + Quote Reply
  5. Dec 5, 2022 #4
    Star Rider

    Star Rider Medium Load Member

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    Change the solenoid on the firewall
     
    Star Rider, Dec 5, 2022
    Star Rider, Dec 5, 2022
    #4 + Quote Reply
  7. Dec 11, 2022 #5
    dberset

    dberset Bobtail Member

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    dberset, Dec 11, 2022
    dberset, Dec 11, 2022
    #5 + Quote Reply
  8. Dec 11, 2022 #6
    dberset

    dberset Bobtail Member

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    All clean. No start signal getting to firewall relay
     
    dberset, Dec 11, 2022
    dberset, Dec 11, 2022
    #6 + Quote Reply
  9. Dec 11, 2022 #7
    dberset

    dberset Bobtail Member

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    No start signal getting to relay on firewall. I can operate it with my power probe.
     
    dberset, Dec 11, 2022
    dberset, Dec 11, 2022
    #7 + Quote Reply
  10. Dec 11, 2022 #8
    dberset

    dberset Bobtail Member

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    Jan 12, 2020
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    I can use my power probe tho energize the relay via start terminal. There is no power coming from the start wire to make it operate with the key.
     
    dberset, Dec 11, 2022
    dberset, Dec 11, 2022
    #8 + Quote Reply
  11. Dec 11, 2022 #9
    xsetra

    xsetra Road Train Member

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    run a new start wire from ignition switch.
     
    xsetra, Dec 11, 2022
    xsetra, Dec 11, 2022
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  12. Dec 11, 2022 #10
    dberset

    dberset Bobtail Member

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    Jan 12, 2020
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    If it were that easy I would do that but it runs through the pdm first
     
    dberset, Dec 11, 2022
    dberset, Dec 11, 2022
    #10 + Quote Reply
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