HELP electrical issue - JeepForum.com
 
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post #1 of 9 Old 04-25-2013, 02:00 PM Thread Starter
sullyde79
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1975 CJ5 
 
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HELP electrical issue

I have a 75 CJ5 with a new altinator. The jeep will start with the battery connected but won't stay running once the battery is disconnected. It dies instantly. The only other symptom is that the headlights stopped working. I don't know if these problems are connected or not. Any info would be greatly apprectiated.

Thanks

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post #2 of 9 Old 04-26-2013, 08:37 AM
frhrwa
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question, why would you disconnect your battery after you've started the engine? if I remember correctly, when my battery blew out, the motor died when the charge was gone... the alternator in itself will not keep your engine running..

I want to die in my sleep like my grandfather, not screaming in terror like the passengers in his JEEP!...
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post #3 of 9 Old 04-27-2013, 02:37 AM
John Strenk
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Actually it will keep running with the battery disconnected. The battery is just a storage device and the Jeep actually runs on the alternator most of the time. If you have an ammeter you would see that the battery practily puts out nothing when the engine is running.

It's a quick way of making sure the alternator is working.

I'm thinking they may not be connected, Headlights and engine running that is but..

Have you checked the firewall plug, if you have one, to see if it's tight?
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post #4 of 9 Old 04-27-2013, 06:56 AM Thread Starter
sullyde79
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My firewall plug looks like a hot mess and I can't find a place to order a new one. Thanks for pointing me in the right direction.
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post #5 of 9 Old 04-27-2013, 07:36 AM
John Strenk
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post #6 of 9 Old 04-27-2013, 01:26 PM Thread Starter
sullyde79
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It appears to be in one piece, but it's all gummy inside. I should be able to clean it out.
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post #7 of 9 Old 04-27-2013, 01:28 PM
jodowii2
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The gooey stuff is di electric grease to kep water out
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post #8 of 9 Old 04-27-2013, 05:25 PM Thread Starter
sullyde79
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I did a simple test and it was blocking the circuit. its more like tar. I used a test light. If I touched it no light, if I scraped it away some, light.
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post #9 of 9 Old 04-27-2013, 08:10 PM Thread Starter
sullyde79
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The headlights were not a symptom after all. That was a loose connection. I haven't been able to check to see if it'll stay running yet. Sleeping 2 year old. But thank you for the help.
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