The easiest way to ensure it is bleed properly is to just remove the bleeder screw and pour coolant mix in the radiator cap till it is full to the top and coming out of both holes. Then put the bleeder screw back in and close it off. The excess coolant will just purge out on its own.[/QUOTE]

Guys thank your'll so much for your help but I'v done just that. But i'm not sure what radiator cap you're talking about. If its the Expansion tank cap, yes i've done that, pour coolant in there until only coolant comes out of the bleeder hole on the exp tank. I even raised the front of the vehicle at least 18" high.
I dont know what else to check......

And Jordo, thanks man, i saw where the sensor is. (Coolant temp sensor), but i'm not too sure if that would cause it to overheat ( as Weasel said) cause it purges the coolant which means too much pressure or too hot. The cap is new also
I'm really getting fustrated right now.....