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Magnatized Alternator Kills Battery - Why?

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Old 12-13-2004, 08:42 PM
mallman mallman is offline
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Magnatized Alternator Kills Battery - Why?

I have a 1996 Ford F-150 with 105K miles. It is the best truck I have ever had. this year while driving I noticed the voltmeter dropping off, the truck sputtered and eventually died. Sears replaced the alternator and the battery. Six months later, the battery is dead again. Today four months later, I die at a gas station and even with a jump it is dead. I towed the truck in AGAIN. They can't understand it but the alternator is magnatized, the battery dead and the starter (a Sears re-built) dead.
What is causing this? I've never heard of such a thing. The only other anomoly is there is a 15 amp fuse that controls the speedometer, dome light and chimes that continually blows out every few months. HELP
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Old 12-14-2004, 01:03 AM
t_dickie t_dickie is offline
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When is the alternator magnetized, and what part is magnetized? If the key is in your hand and the pulley is magnetized, then the alternator has a draw in it, probably caused be a bad diode. I'd get a new alternator and that should fix it.

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Old 12-14-2004, 04:45 PM
qman qman is offline
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Don't let Sears work on your vehicle. 10-15 years ago I bought tires from them twice and both times when I picked up my vehicle they had a list of things I needed that I knew I didn't. They assumed I was an idiot and would have them jump on it. Then 60 Minutes does a story on how Sears routinely rips folks off by making up things that their cars need. I haven't been back since. I'm sure its not as bad as it was but I wouldn't take my car to Sears for repairs. You probably got a bad alternator from them.
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