How do you replace the thermostat in a ford windstar GL?

Answer 1

Before replacing the thermostat, be sure to check your blend door for functionality. The most common issue with heat or A/C in the late model Ford Windstar is a broken blend door. A broken blend door actuator is almost as common as a broken blend door itself. Typically, the fix requires disassembling the entire dash and replacing the whole plenum box, which can be a costly repair. Linked here is a video from www.heatertreater.net demonstrating how to access components of the plenum box for repair without disassembling the entire dash.