Hello,
I have a 2001 GTP that I have just replaced the water pump, coolent elbows, Upper and Lower Radiator hoses, heater hoses,180 degree thermostat, the radiator cap and used new coolant and when going up hills/mountains or driving in traffic, the car over heats with the A/C on, when the a/c is off it runs at about 210 or slightly over.
I felt both upper and lower radiator hoses and they are both hot and the both fans are working. everything is pointing to the radiator but I thought I would ask in-case someone has ran into this before.
The car has 203,000 miles on it and runs smooth with no noise, the lower intake manifold gasket was replaced at about 100,000 and does not appear to be leaking, there is no oil in the coolant and there is no smoke (White or Black) coming out the tailpipe.
I appreciate any help that can be provided