Richpin shows the proper way to replace an engine coolant temperature sensor on a Saturn S series. Before he explains the steps of replacing the sensor, Richpin covers the tools to use. Also, Richpin illustrates the types of tools to avoid before beginning the replacement process. First, remove the cap from the expansion tank and then tighten it the way it was before. Next, Richpin shows the procedure for locating the temp sensor. Then, remove the connector from the sensor. Afterwards, Richpin shows how to examine the sensor parts and the connector. Finally, Richpin connects the new sensor to the place where it belongs.