I've been searching and will continue to . . . but please offer advice if you have it.

Here's the situation - 1984 300D "California", 194000+

My AC does not blow cold. This seems to have happened during a seasonal break several years ago, and I cannot remember if it coincided with an accident (deer) or after.

The compressor is not receiving voltage. The Monovalve appears to have 13.4 volts continuously.

All fuses are good and verified voltage on both sides (save for headlights, etc that were not in use). Working blower motor.

I removed ACC and checked & reflowed solder joints, tensioned connecting sockets, cleaned connecting pins and switches, verified continuity of traces and functioning of relays on ACC board.

I've swapped places of both 'ice cube' relays, but do not have a known working one to put in.

Just figured out where the aux water pump is and haven't yet checked voltage there.

Temp wheel changes temperature from cool to hot - its a little slower going back to cool again, but the range is there - just no AC, no Cold.

What is the next thing I should check and how? I've wondered about the temperature sensor. Turning the wheel does not consistently result in a "click" as I remember from the past - though it seems to make the sound when coming off of the Max Heat detent.

At one point a few years ago, I asked my brother (mechanic) to charge the AC while I had the car at his shop. He couldn't get the compressor to kick in and at the time thought it might be related to the ACC unit. I needed the car (have only one) so did not leave it for more in depth investigation. However, after going over the unit, I believe something else is suspect.


Thanks for your time and help!

Jeff

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1984 300D "Brown (and Blue) Betty" Over 200k but the odometer isn't counting