its getting hot again

well as we all know the 94 firebird 3.4L notorious for over heating
i back flushed my system and it came out clean no rust at all.
my fan was not turning on so i hard wired a switch and turn it on/off manually, if i dont turn it on i over-heat in about a 1/2 mi. and when i do turn it my temp gauge moves about 10 degrees even after driving for 30min. but when i open the hood the motor is hot as hell. when the car is running and i remove the radiator cap i still have alot of pressure and coolant shoots out for about 2 seconds then im good it has a slow flow im assuming due to the water pump is ready to go. anyone got any suggestions i would appretiate it alot. :banghead: :banghead:

i would change the water pump and see if that works out and try the thermosethat

well i changed the water pump, no fun but it has not helped a bit i took it to the dealer and they had no clue why it was overheating the radiator they said was good my hoses are all fairly new.