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Old 08-04-2010, 07:30 PM
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Batteries dead in less than 48 hours

I have a 2002 F250. My batteries are draining dead in less than 48 hours. I pulled the fuses one at a time, but still had current draw. Before it seemed to take about 4 days now its gotten worse. When I drive the truck everyday, I dont really have any issues. So any ideas? Thanks
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Old 08-04-2010, 07:55 PM
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Have you had the batteries tested? That's where I'd start for sure. Make sure they are isolated from eachother when they get tested
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Old 08-04-2010, 08:06 PM
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No not yet. I find it hard to believe they are bad when they charge fine. I know there is a draw coming from somewhere. I did have an amp meter inline at one point and I think it was pulling close to an amp, but, cant remember exactly.
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Old 08-04-2010, 08:11 PM
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Ya I know what you mean but wierder stuff happens ya know. It's always best to eliminate the "sure things" first. I'd check the alternator too. It has a positive feed and ground so there's always the possibility something is wrong there. Somethimes the simplest thing seems very complex. I hope that's the case for you. I hate wiring issues
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Old 08-05-2010, 04:35 AM
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Thanks, yea usually its the little things that will kick your butt.
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Old 08-06-2010, 07:45 PM
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figure anything out yet?
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Old 08-09-2010, 01:55 PM
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had the same exact thing on the same exact truck. the alternator go out no biggy, replaced with a new one charged the batteries, NEXT day batteries dead, here to find out brand new alternator had a bad diode and drained the batteries over night
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Old 08-09-2010, 05:12 PM
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Wow! That's enough to tick ya off huh?
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