there are two temp sensors in the tours. one is the sender and one is a sensor. one is for the computer to tell the fans to start when hot and to raze idle when cold. the other is just for the temp gauge. if u have a zetec the one for the computer is on top of the thermostat housing and the one for your gauge is under the housing. but i forget which one is called the sender and which one the sensor(i dont have my haynes with me)
