Question about 2001 Ford Windstar

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When you move the controls in the heat position you have no heat but a thumping sound up under the dash

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Your blend door is not actuating. The door may be jammed or the actuator gears may be slipping. Remove the actuator and check the door for free operation. If the door is jammed, you may need to open the heater box to unjam. If it is free, replace the actuator.

It looks like the actuator is right on the front of your heater box--see diagram below.when you move the controls in the heat position - 4ad64fe.gif

Posted on Oct 03, 2010

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