It starts fine.... it runs fine, but about twenty minutes into driving, the car temp gauge goes up and stays in the middle... like the fan should kick in at that point. I crank the heat thinking that would help, but then when i slow down into first or stop it stalls. I just bought a new water pump two years ago.. and just had a radiator flush not too long ago... nothing else is wrong, and it just started doing this this week... what the hell?!?!?!

Runs hot in the summer. I have replaced radiatior, water pump, thermastat, all hoses, heater core, belt, head gasket, had it flushed, and it still does the same thing.