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Power Strokes
6.0 Tech
Alternator or battery problem?
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[QUOTE="Fordguy100, post: 739639, member: 7933"] Low alternator output can be because the batteries are so drained, that's it's struggling to charge them. The Ex can't sit more than a week without running before te batteries drain down. If the barreled drain down to below 12v with the engine off, it takes a looooong time to idle/run to get them into good enough shape to hold 13v at idle. Load test batteries, have them test alternator. After that, figure out if your truck has a draw. I know mine does, just gotta take the time to figure out why/where [/QUOTE]
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