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Unread 04-25-2013, 03:00 PM   #1
sullyde79
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1975 CJ5 
 
Join Date: Apr 2013
Location: Greer, SC
Posts: 8
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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Unread 04-26-2013, 09:37 AM   #2
frhrwa
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1984 CJ7 
 
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Location: Deer Park (north of Spokane), Washington
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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..
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Unread 04-27-2013, 03:37 AM   #3
John Strenk
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1976 CJ5 
 
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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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Unread 04-27-2013, 07:56 AM   #4
sullyde79
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1975 CJ5 
 
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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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Unread 04-27-2013, 08:36 AM   #5
John Strenk
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1976 CJ5 
 
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You could rebuild it if it's not all melted apart..
Terminals are easily available.
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Unread 04-27-2013, 02:26 PM   #6
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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Unread 04-27-2013, 02:28 PM   #7
jodowii2
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1980 CJ7 
 
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Location: monroe city, mo
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The gooey stuff is di electric grease to kep water out
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Unread 04-27-2013, 06:25 PM   #8
sullyde79
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1975 CJ5 
 
Join Date: Apr 2013
Location: Greer, SC
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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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Unread 04-27-2013, 09:10 PM   #9
sullyde79
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1975 CJ5 
 
Join Date: Apr 2013
Location: Greer, SC
Posts: 8
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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