I tried searching it out this time, and couldn't find anything on it.

Here's my latest adventure with Ol' Betsy, my '82 300TD.

This problem has occurred twice.

Out of nowhere the a/c starts blowing hot. Hmmm... okay, so I turned the air off, and opened the windows. After running the car for another 15 or so minutes, I pull into the driveway, and turn her off. So when then I go to restart her, and the battery is WEAK.... barely turns over. Sounds like the alternator, right?? I read something recently about some component on the alternator that frequently goes out, and can be swapped without removing the alternator. Might this be it?

Help!?

Thanks guys.

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'90 300SE --- 173k miles --- (Odometer just stopped working!)

'85 Cali 300D --- 193500 miles --- (Second one) Sold Nov '10

'82 300TDT --- 236,xxx miles --- (My first one) Sold July '09

OK, I'm not a 300 owner, and I don't have ACC, but is this not a classic monovalve/ACC problem?

Someone else chime in here!

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http://i68.photobucket.com/albums/i1...Untitled-1.jpg

The part you are refering to is the voltage regulator.

Does the compressor run when the air is blowing hot?

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1976 BMW 2002- 100k
1995 BMW 325i 175k
1984 Mercedes Benz 300D Turbo Diesel- 270,000 mi

1981 Mercedes Benz 240D- Estimated 300,000+ mi Returned to the earth

When my alternator went out it caused all kinds of strange electrical issues from ACC to radio and starting issues. You might be able to change the voltage regulator without removing the alternator, but you'd have to be pretty dextrous in my opinion. Removing it is not so bad. Good luck.

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1984 Astral Grey 300TDT - The French Fry
1979 Yellow 300SD - The Pomme - SOLD
1985 Light Ivory 300DT - Fritz
1987 Anthracite Grey 300SDL - ?