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Old 04-14-2009, 06:01 PM
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EricSilver EricSilver is offline
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Join Date: Mar 2000
Location: Fairfax, VA
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Quote:
Originally Posted by M.B.DOC View Post
On at least 6 cars like yours...1993-95 E-class with a M104 engine with above symptoms

The voltage regulator WAS the problem............

Connecting a volt meter while driving & watching for a HIGH voltage spike is good idea.

I use an old radar detector plug connected to my Fluke that has a min/max recording feature.
That's the one major thing I have not checked, and will definitely do. Arthur Dalton also suggested it several months ago. (I'm obviously a procrastinator.) I'll open the alternator and have a look tomorrow.

It's interesting that you suggest looking for a voltage spike. I was wondering if a erratic/fluctuating/oscillating current from some component could throw the computers into a tizzy and trigger the fault.
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2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black
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