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Re: 1989 525i mysterious battery drain HEEELPP!!! (archive)
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Posted by Callan on March 28, 1999 at 19:30:43:

In Reply to: 1989 525i mysterious battery drain HEEELPP!!! posted by Derek on March 28, 1999 at 16:27:57:

The new altn. is bad. One or more of the diodes have gone bad. It's the positive ones if I remember right. Replace the part, make sure that your battery is still good as you don't want to fry the new altn. once you install it. Having a dead battery in a car with a new altn. trying to charge it up is a easy way to overheat that new altn.

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