You should be able to test the sensor for Ohms. More than likely the water temp sensor is cooked.
Change the thermostat and gasket / o-ring while the housing is apart.


95 Contour GL. Bought new. BAT Sway Bars/Pioneer CD/Koni Rear Struts/Mobil Fluids. Looking for 15" alloy rims-PM me. 180,500km's so far.