I've got a question for ya. My car is a 94 GT with the stock 302. For some reason now when cruising down the highway on a hot day around 60 or so with the AC on the engine temp keeps increasing. I have an autometer water temp gauge so it should be accurate. It also does this when cruising down the interstate on a hot day without the air conditioner. At around 70 and up the temp keeps increasing until I slow down. It's fine at night to go as fast as you want it never goes above 180. In traffic I'll turn the AC on till the car gets up to 200 or 210 and then turn it off and let the temp drop back down to 180. What I have done: new 180 thermostat, new stock replacement radiator, changed the coolant at about 60%water, 40% antifreeze, cleaned the AC condenser, put the front air deflector on it since it wasn't there when I bought it, and backed the timing off a little to 12 BTDC. The electric fan is working; but I don't know if it's a 2 speed fan and if it is if the high speed is working if it is. It kicks on at about 160. Nothing has helped. During the winter when it's cool out it will run about 175 at 60mph and cooler if I go faster. The only thing left I can think of would be the water pump; but I don't know why the water pump would cause that. The car has about 190,000 miles on it and 3.27 gears, so it's not turning a lot of RPM. It had been screwed with by the previous owner who was obviously an idiot. Any suggestions would be greatly appreciated, cuz it's hot in Florida! Thanks