I have a 1997 Isuzu Rodeo / Honda Passport V6.
The AC will turn on and work indefinitely when it's not very hot outside (70's or lower).
When it's more like the 80's and higher, the AC will ALWAYS work for about 10 minutes, then I notice the AC condenser fan will turn off and stay off (the little fan in the front part of my grill). At this point, the cool air coming out of the vent starts to warm up. The air is warm after about 30 seconds of running, after the AC condenser fan turns off. So no more cool air. However, if I'm driving more than 45 miles an hour, the AC will work, most likely because there is air to cool the car down. The condenser fan is mostly likely still off. I can hear the AC compressor click on and off at all times. I believe my condenser fan is suppose to run when I'm idle to cool off the AC components (radiator?). I'm wondering what would cause the fan to work the first 10 minutes, then turn off?
Does the fan have an internal over-heating mechanism? Does the fan have special wiring components that don't work when hot? Should I just buy a new fan and install it, or is that a waste of time? The engine temperature sensor is VERY difficult to reach in my car so I don't plan to replace this unless it IS the problem.
I don't have a refrigerant leak. My pressures for the AC system is working perfectly (tested by a mechanic). I tried replacing/swapping the relays next to the car battery.