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Old 02-16-2009, 09:08 AM
Gauge Gauge is offline
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Join Date: Aug 2005
Posts: 81
Quote:
Originally Posted by TX76513 View Post
You have one or two backout diodes bad in the alternator. $3 at Radio Shack
Wish I would have known that earlier.....but even if I bought the diodes, I wouldn't know what to do with them. This actually makes sense, because I figured it had to be something simple. The car only has 85K original miles - this is hardly the life expectancy of a Mercedes Alternator. In fact, the "core" I returned looked as good as the new alternator I bought.

I installed the new alternator this weekend. Works perfectly. Problem solved. Thanks again for all your help.
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1999 E300 Turbo - 112K miles
1987 300D Turbo - 89K miles
1984 190D 5spd - 152K miles
1969 220D Auto - 170K miles
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