I'm looking for to check it before I replace it. The AC blows cold while the truck is moving, but is intermittent warm/cold while not moving. The fan does not turn while parked with AC on and motor at operating temp. I checked the fuse and it's good. I'm guessing one of the two wires that go to the fan should be hot. Maybe do a probe test?
In an apparent unrelated situation, I was getting an antifreeze oder through the AC and thought the heater core was leaking :str:, but I see there is coolant on the radiator reservoir tank and it seems the cap is bad. Is that likely?