that can be a sign of head gasket ie pushing air in to the heater matrix, or might be a fault with the heater box in car, as these cars have a heater matrix that is always hot and the heat box uses flaps to bypass with cold or hot air depending on what position the heater controls are on,
way to tell run car for 10 miles then feel under heater in floor well behind the plastic covers .
way to tell run car for 10 miles then feel under heater in floor well behind the plastic covers .
