Driver compartment gets very hot after driving for about 45 minutes or so
Engine temp gauge is normal but inside driver compartment (driver front seat area, especially near feet/legs) it is getting very hot. I have to open the windows, even if driving at night. Starts after about 45 minutes driving. 248,000 miles on the car so I replaced radiator, hoses and thermostat with new ones, and it still does this. AC and heater are working. Engine temp gauge shows normal. Any ideas? Heater control valve a possibility?