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Old 05-22-2007, 06:49   #1 (permalink)
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Alternator?????

This is for any of you mechanic types. On my f350 v10 the alt light comes on after 3k rpm, then goes off when below. Battery is ok at 12.5 v and the alt is putting out 14.25 running. Is the alt on its way out, possibly overcharging at high rpm?? thanks for any ideas
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Old 05-22-2007, 08:56   #2 (permalink)
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Re: Alternator?????

Check the output at high RPM. If it goes over 15, then the light will come on.
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