yesterday i changed the upper and lower radiator hoses(very old) the radiator cap and the thermostat.... took it for a drive and thrashed it a little !! but the car still seened to be getting quiet hot ...... and after i unplugged the heat sensor and put it bak in the heat said half in the guage,,,, something is a miss and i just cant figure it out !! sensor? head? and there doesnt seem to be a build up of pressure on the hoses?? me is a little lost .... have i done something wrong ??