AC pressure is good. And the engine coolant temperature only rises slightly if I am traveling for a long period of time at high speeds or sitting in traffic.

"You can check the condenser fans themselves by putting a jumper across the high pressure switch that turns them on to low speed. It's also possible the fuse is blown, I believe they have their own fuse. There is also a resistor that is used by the low speed, if it's failed you will only have the high speed that comes on when the engine is overheating."

I think I may have a problem with my fans.
Do I jump the high pressure wire leads or the actual switch? Also, when I do this test I take it the a/c should be on high?

I have 2 separate leads that go into a fitting, and also one wire that plugs into a single fitting and then goes into two leads.
Can you tell me which wires I jump?

I have not been able to locate a resistor for the a/c fan on my 1980 240d.
Is it built into the fan itself or is it a separate unit (block) attached somewhere in the engine compartment?