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Old Jan 30, 2009 | 07:19 PM
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battery draining

Need some help guys and gals. I have a 2000 F-250, and my batteries keep going dead. I had both batteries tested out of the truck, at two different places, and both say they are good. I used a test light and found fuse #22 under the hood, which is the Junction Box Battery Feed, seems to be the problem, but I don't know where to go from here. Any help would be greatly appreciated!!
 
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Old Jan 30, 2009 | 07:38 PM
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What makes you think #22 is a problem? What did you find there?
 
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Old Jan 30, 2009 | 08:16 PM
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My 1st thought would be alternator....I would get that tested, regardless of the fuse issue.
 
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Old Jan 30, 2009 | 08:43 PM
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I hooked the test light between the negative battery cable and the battery and pulled fuses until I found #22 to be the one that had the test light on. Alternator is brand new, problem was occurring before I replaced it. I can charge the batteries, never start the truck and they will be dead in a couple days. Thanks for the help
 
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Old Jan 31, 2009 | 01:13 PM
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TTT for you.

I've been having the same issues. My batteries and altinator are good. I haven't really looked into yet, but my batteries only last like 12 hours on a charge and is about driving me up the wall!
 
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Old Jan 31, 2009 | 01:21 PM
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From time to time the alternator will test good inside the truck and when pulled and bench tested it fails.
 
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Old Jan 31, 2009 | 02:32 PM
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Good point, Jim. Mine did exactly that. Tested good ON the truck. Scratched my head, took it off the truck and took it inside....BAD!

When you say brand new...do you mean a brand new reman or brand new NEW?! Some of the remans are just rebuilt crappy. When mine went out I splurged for the brand new alternator for like 30.00 more.
 
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Old Jan 31, 2009 | 03:01 PM
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I have had the voltage reg.cause a drain one time drove me nuts tell I found it.

I hate short circuit smurfs.
 
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Old Jan 31, 2009 | 04:25 PM
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Not trying to steal your thread, but no sence starting a new one.

My alternator is only a few weeks old from DB electric. It was a brand new one not a re-man. I thought it was my stero system at first so I disconnected the power wire and it didn't help any. I just went out to the truck, I need to fill up the propane tank, and of course it's dead again. This is really getting old! I just bought two new batteries about 2 weeks ago and had them checked yesterday at autozone. They said everything was fine. I can't find my meter either.
 
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Old Jan 31, 2009 | 04:45 PM
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#22 is labeled as junction box battery feed and is a 50amp fuse. I think it's a main fuse and fuse the main junction box where lots of other things feed off of that. You need to keep doing what you are doing and skip that one.
 
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Old Jan 31, 2009 | 05:02 PM
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The alternator is brand new Db electric, my second one since sept, I have never started the truck with this alternator, the last one bench tested at 11 volts so I sent it back and Db sent me this one. I pulled all the fuses and the only other one I found that was pulling power was the keep alive memory and it was very dim on the test light compared to fuse #22. Thanks for the help so far!!
 
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Old Jan 31, 2009 | 05:18 PM
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Need to find a wiring diagram that shows what all is hooked up to that junction box. How old are your batteries? A bad battery will drain both since their hooked together.
 
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Old Jan 31, 2009 | 05:29 PM
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Batteries are about 2 years old, I took them out of the truck and had them tested at two different places, both places say they are good. Anyone out there have a link for a wiring diagram by chance
 
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Old Jan 31, 2009 | 05:34 PM
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Send Jim (Megawatt00) a PM. He's busy now dealing with his house, but he does check in now and then. He has a some of the wiring diagrams for our trucks.

Edit: He's online now and probably looking at this.
 
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Old Jan 31, 2009 | 05:45 PM
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I just looked up and saved the wiring diagrams for the power distribution for you. Send me your email and I'll send them to you. They are to large to post here.
 
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