I have a 1995 Aerostar 3.0 and when I run the A/C, my engine heats up to the "a" in Normal on the temperature gauge. If I turn the A/C off it settles back to the "m" on the gauge. The gauge normally rests between the "n" and the "o". When I shut the engine off, the coolant leaks from underneath from what appears to be the waterpump or wear the lower radiator hose connects. It is a steady flow for about 4 - 5 minutes then it stops. I changed the hose which had a small cut near the clamp and I thought that was it. The waterpump is completely dry. I checked around the gasket as best I could and all appeared to be fine. I am out of ideas as to what it could be. Any help is greatly appreciated.