Hi everyone Iím new here. I recently bought an 04 s80 with 137,000 miles and it has been really great. The only issue with the car is upon start up the radiator fan (I think itís the radiator fan) starts right up. Iíve done some research and others were saying that the thermostat is bad and the sensor is too. If that is true can I buy the thermostat valve or the whole housing?