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  #1  
Old 06-11-2007, 07:15 PM
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What could I be doing to cause so many Alternator Problems???

1977 Mercedes 240D (W123.123) - replaced the originial alternator at 206k. That alternator died later that same day. The replacement for that one died later that week. The replacement for that one died a week later. Shop threw out the whole run and started with a new set. That alternator is still running fine on the car (280k).

1992 Chevy S-10 - original replaced at about 80k. Replacement died at 130k. That replacement is still running on the vehicle (or was when I sold it a few months back).

1990 BMW 520i. No problems while I owned it.

1988 Mercedes 300TE - prior to my purchase, the alternator had been rebuilt at 87k again at 198k. Full replacement at 210k. It's been about two weeks, so far so good.

1998 Toyota Avalon - Original alternator replaced under warrenty from dealer. Replacement died today (just after the warrenty expired).


So that's what? a dozen alternators across 5 cars in a 15 year span. I replace alternators more often than tires. What could I possibly be doing to cause this?

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  #2  
Old 06-11-2007, 07:31 PM
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Murphy's law
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Old 06-11-2007, 08:09 PM
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I'm tired of having Murphey in my Carpool. How do I kick him out?
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Old 06-11-2007, 08:11 PM
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You're buying rebuilds which are junk. Get your alternators and starters rebuilt by a local electrical rebuilder. I have always got quality work from the local shop and most times the price was less than an over-the-counter exchange part.
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  #5  
Old 06-11-2007, 08:20 PM
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Nope. I never get rebuilds, I always go with new. With Mercedes I get Bosch. With my Toytoa it was done by the dealer.
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Old 06-11-2007, 08:55 PM
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New is very, very, expensive. Are you sure you bought new? Or did the dealer sell it as new?
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  #7  
Old 06-11-2007, 08:58 PM
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Trust me, dropping $300- $500 a year on alternators, I know it's expensive. I might have gone with rebuilds at first, but after burning a few of them out I have no qualms about going with new every time now. It's just irritating me that I have to keep doing this. I shouldn't have to replace my alternator more often than my tires.
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Old 06-11-2007, 09:00 PM
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I use local auto electric shops. No problems.
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Old 06-11-2007, 09:39 PM
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Local shops the only way to fly.Talk to the local builder, you will find most of them are going bad from poor grounds, Test in the dark with a well ground wire,touch different areas looking for an ark this is an area of poor ground you know what to do from there.
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Old 06-12-2007, 09:16 AM
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Corrosion on the battery terminal can cause an alternator to fail prematurely,,, or maybe it's your electrical personality
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Old 06-12-2007, 10:06 AM
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Quote:
Originally Posted by mespe View Post
Corrosion on the battery terminal can cause an alternator to fail prematurely,,, or maybe it's your electrical personality
Well, I have tried moving metal objects with only my mind.... and I do command the loyalty of small animals....

I did have corrosion on one battery terminal on one of the vehicles once (about the time I purchased it), but the Army taught me to do proper periodic PMCS and I keep my battery terminals clean.

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