Honda Repair: 1995 honda accord overheating, ac condenser, radiator fan

Question
My 95 accord started overheating about a week ago...and been since that working on it trying to figure out what wrong...

1-checked all hoses (no leaks).
2-flushed the radiator (not blocked).
3-AC condenser fan was hesitating so i changed it with a brand new one.
4-radiator fan is working perfect.
5-i checked the timing belt and the water pump..almost brand new were changed on 112k and the car got about 125k now.

with all that the car is still overheating especially when going up the hill it overheats and while goin down the hill it cools bck down...or turning the AC on it starts overheating..turn off the AC it starts cooling down again...

and i don know what's the problem...i mean everything is replaced and working

Answer
easy one word....( THERMOSTAT ) located under the top hose mounting, remove and put in water with a temp gauge and see when the thermostat opens at whick temperature when you heat it up, if it takes too long to open get a new one or simply leave it out, if this doesnt work retard the timing by about 2mm to make it run cooler, it wont hurt your car

Hope ive been of some help

Cheers RUSTY