The Blend Door actuator on the Ford Windstar can be found by removing the glovebox. A broken blend door actuator is almost as common as a broken blend door itself. Typically, the fix requires...
Something falling into the ductwork could have jammed the blend door - causing the very very small plastic gears inside the actuator to break off some teeth. Another reason could be these units are...
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In the...
Inside this unit is a circuit board, motor and small plastic round gears. The gears then rotate the actuator, which in turn opens and closes the damper allowing the air to pass through the heater...
Remove the actuator and watch it operate when adjusting the temperature control.
If it moves only in one direction it's broken. And obviously, if it doesn't move at all, it's broken.
With the...