Hello, I have a stick-shif 323 f I had the.

Hello, I have a stick-shif 323 f I had the thermastat taken out 2 years ago, the car ran good, now the cooling fan won, t come on, and the tem, goes on high, I have to turn on the air-condition, to cool the car, I put a new sencer, in but it sill gets hot, a mechanic, he hooked the cooling fan to run all the time, the car runs great, but when we stop and turn the engine off it won, t start after that, it acts like the battery is low, but if I let the car sit for 2 hours it will start, is it the altinator? Can you help, thanks.