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Unread 02-22-2013, 10:16 AM   #1
ColdSteel85
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1982 CJ7 
 
Join Date: Jan 2013
Location: Richlands, NC
Posts: 75
Battery Drains

Hey y'all. I currently own my second CJ. The newest I bought 3 weeks ago. I know battery drainage is a common problem in the CJs and both that I own/ed have had this issue. Wondering if there is a common issue that causes this or does it vary greatly from one jeep to the next? Thanks

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Unread 02-22-2013, 10:25 AM   #2
waterdowg
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1984 CJ7 
 
Join Date: Mar 2009
Location: nj
Posts: 2,244
It varies on the Jeep and the wiring. Mine does not drain, I let it sit weeks and its fine.
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Unread 02-22-2013, 12:47 PM   #3
wm69
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With key off, remove neg batt cable, and put clamp on cable end, and probe on battery neg post. Light will be lit if you have a drain. If light is on, start unplugging fuses one at a time, and when the light goes out, you've found the particular circuit your drain is on. If you pull all fuses and still have a drain, try unhooking your alternator and see if it goes out. My drain was a bad diode in the alterntor that was draining the battery.
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85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT

85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO
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Unread 02-22-2013, 12:51 PM   #4
waterdowg
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Quote:
Originally Posted by wm69 View Post
With key off, remove neg batt cable, and put clamp on cable end, and probe on battery neg post. Light will be lit if you have a drain. If light is on, start unplugging fuses one at a time, and when the light goes out, you've found the particular circuit your drain is on. If you pull all fuses and still have a drain, try unhooking your alternator and see if it goes out. My drain was a bad diode in the alterntor that was draining the battery.
x2 on this to see if you have drain. But make sure you unplug the hood light and radio if you have one thats got a constant power. Those will alway show a drain and will lead you on a wild goose chase. Ask me how I know...
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Unread 02-24-2013, 06:08 AM   #5
ColdSteel85
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1982 CJ7 
 
Join Date: Jan 2013
Location: Richlands, NC
Posts: 75
Ok thanks plan to start that journey today. In regards to constant power sources, I have a Laredo with the factory clock that still works. That should be unplugged as well before I start I assume? Thank you
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Unread 02-24-2013, 07:37 PM   #6
waterdowg
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1984 CJ7 
 
Join Date: Mar 2009
Location: nj
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Quote:
Originally Posted by ColdSteel85 View Post
Ok thanks plan to start that journey today. In regards to constant power sources, I have a Laredo with the factory clock that still works. That should be unplugged as well before I start I assume? Thank you
Yes unplug it.
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