Car STILL running too hot!

after taking out the thermostat (the old one went out and havent had time to replace it), and changing out the water pump, my car is still running hot. for not having a thermostat and having a new water pump, i'd think it would be running very cold..i checked the radiator and that's good (also fairly new with only about a yr on it), and the fan itself has had the motor replaced within the last year as well...but it gets hot after driving it for about 10 minutes! what the hell is going on? any suggestions?!

Edit: after driving it around w. the new waterpump, it is running on normal but i still worry that after driving for a while, it'll over heat.

i'll try putting in a new thermostat..im sure my radiator isn't clogged, my head gasket isn't blown..i double checked all that before i bought the pump. if it starts acting up even after poppin in the new t-stat, im gonna take it to a mechanic..damn car has been verrrrry bad, and now with winter here, she's upsetting me.