OK now I checked my radiator on the 04 dodge. The lower 2.5 inches are hot, the upper rest are cool to the touch, should this be normal? The thermostat is located on the lower part of the motor, still she runs hot on the highway, and the other day I had my a/c on and I can hear the fan clutch kicking in, are there any dodge experts out there that can help me fix this before I have to take it to a shop?