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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

83 f-250 battery problems

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Old May 19, 2007 | 04:16 PM
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77fordf-150
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83 f-250 battery problems

Everytime I go to start it the battery is dead. Has dual batterys and for engine I have the 6.9 liter diesel. Jumping it takes forever cause I'm guessing its trying to charge two batterys up at once and that takes longer. What can I start to look for?
 
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Old May 19, 2007 | 06:44 PM
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Mil1ion
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Never reply on an alternator to CHARGE batteries.

use a battery chnarger for that.

all an alternator is meant for is to keep a battery topped up
 
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Old May 19, 2007 | 08:51 PM
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Take both batteries to some place like WalMart or Advance where they can load test them at at least 100 Amperes (more is better). One bad one can draw the other one down. If they don't find a bad one, have the alternator/regulator checked.
 
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Old May 19, 2007 | 09:13 PM
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There are a few threads on here that discuss Dual-Battery complexity and how to keep them in the same condition.

I know there are 2 in the 73-79 forum and a couple in the electrical forum.
 
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