I've had two auto shops try to figure this one out. AC works great on short trips. After about 45 (roughly) minutes of driving the AC just goes out, abruptly, as if I turned it off. But the compressor is still running. It has recently been charged and checked again.
I'm beginning to think that this is related to the outside temperature. It seems to operate for up to a few hours if the outside temperate is below 80 or so, but if it is warmer, it simply shuts off completely sooner.
After it cools for a couple of hours, the AC works very well again.
TIA AG2