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How do you repair the blend door in the heater on a 1999 Ford Windstar?
Wiki User
∙ 9y ago
The blend door is vacuum controlled. Any vacuum leak in the engine system can cause the door to not function properly. Check this system first. The door could be physically sticking but a vacuum leak is a more common problem.
Wiki User
∙ 9y ago
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2002 windstar Heater blower works but no heat?
my 1999 winstar was doing this and it was the blend door
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