Found an Electric Vacuum Pump that I believe has enough volume to do the job. I drove around with it as the sole supplier of vacuum and everything worked normal.
However, my test was not conclusive because I had no vacuum Shutoff Switch, Check Valve or Relay to test it correctly. The Pump got too Hot running all of the time.

The other Electric Vacuum Pump suggested by Compress Ignite in the thread below was made for the job and has all of the electric goodies needed to regulate the Vacuum. However, it is an expensive Vacuum Pump.
The forums that have the most information on 12 Volt Vacuum Pumps are Electrical Vehicle (EV) Forums where people are converting regular Cars to Electric Power.
Here is my thread:


Having an Electric Vacuum Pump may also mean you need to get a higher amperage Alternator.
The question is Pay $350+ for an New Stock Vacuum Pump or pay $350+ for a new Electric Vacuum Pump.

If your AC is not working and you never plan to fixe it the other Alternative is to install a pulley driven Mechanical Vacuum Pump; a bunch on ebay. But, you would have to make the brackets and

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84 300D, 82 Volvo 244Gl Diesel