Tip - How to Install a Mercury Sable Thermostat | eHow

The thermostat installed on your Mercury Sable's 3.0l engine is what allows coolant to flow from the radiator to the engine. When the thermostat goes out, your engine temperature will start to rise with use, and you could overheat the engine and cause permanent damage. Replacing the thermostat isn't an incredibly difficult process, but it will take...