My 93 XLT recently overheated sitting in traffic. Pinned the needle with the A/C. I was able to bring the temp down to normal with the heater on full and the hood open to the first notch.
I replaced the thermostat and top hose (easy since I was already there), but recently had the same problem with the car sitting in my driveway with the A/C on for about 18 minutes. I did notice before I started the car that my overflow was low so I was surprised to see fluid on the ground when I returned to the car.
Any thoughts I would appreciated.
Dennis