1. #1
    cmora111's Avatar
    cmora111 is offline Junior Member
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    2018 JK Unlimited, cranks but won't start after dual battery tray install

    I installed a dual battery box on my 2018 Jeep Wrangler Unlimited 4dr JK. Now it won't start. It cranks but down't seem to fire. I have removed and replaced the whole thing 3 times no broken wires or loose connections. I have checked for blown fuses but don't see any. The engine code were cleared out when disconnected and since it won't start no new codes.

    any help would be greatly appreciated

  2. #2
    TerryMason's Avatar
    TerryMason is offline Administrator
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    Re: 2018 JK Unlimited, cranks but won't start after dual battery tray install

    Welcome to Jeepz.com

    Does it do anything different if you only connect one battery to it?
    My 2005 Wrangler Build Thread

    “He who is without oil shall throw the first rod.” -Compressions 8.7:1

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    cmora111's Avatar
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    Re: 2018 JK Unlimited, cranks but won't start after dual battery tray install

    Quote Originally Posted by TerryMason View Post
    Welcome to Jeepz.com

    Does it do anything different if you only connect one battery to it?
    Actually, I have not even installed the dual battery wiring yet, Just testing the tray install with the primary battery hooked up

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    JPNinPA's Avatar
    JPNinPA is offline Senior Member
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    2018 JK Unlimited, cranks but won't start after dual battery tray install

    Battery temp sensor?

    Did you have to disconnect anything?
    Did you push wires out of the way?
    Do you have security system?

    Sent from my iPhone using Jeepz.com mobile app
    Last edited by JPNinPA; 10-19-2019 at 03:19 PM.
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