1999 E150

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Mar 8, 2004 | 05:55 PM

phoneman

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1999 E150

My electrical system works great until I get up to a higher rpm, then the lights dim, and the battery light comes on. As soon as I lower rpm's back everything works fine again. Checked all connections. Any Ideas?

Mar 8, 2004 | 06:38 PM

Franklin2

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From: Virginia

Some other guys on here have had rpm related charging problems, and it has turned out to be the alternator. And they were taking them to the store, and the alt's checked good, but they finally replaced it anyway, and the problem went away.

Mar 8, 2004 | 07:20 PM

phoneman

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Thats what I think. Thanks for the info. Never seen one do that before.

Mar 8, 2004 | 09:24 PM

prcrboy

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It is the alt. My f25 did it at high rpm and it run that way for a long time until one day the light ouldn't go off. Most of the time they can be rebuilt cheaper than a new one.