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Ray M.
Ray M., Ford Master Tech
Category: Ford
Satisfied Customers: 3053
Experience:  30+ years in trade, Ford Master Tech, Journeyman Automotive Tech
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2005 Ford Expedition has doors in the heater box that

Customer Question

2005 Ford Expedition has doors in the heater box that continuously open and close. What do I look for?
Submitted: 2 years ago.
Category: Ford
Expert:  Ray M. replied 2 years ago.

are you hearing a clicking noise from the heater case at the same time?

Customer: replied 2 years ago.
The heater case is where the noise is coming from. I'm sure it is one of the blending doors.
Expert:  Ray M. replied 2 years ago.

The noise is caused by a defective blend door actuator, they will strip the small gears inside and when they run to one end they try to move back and the noise you hear is the gears slipping, unfortunately this means removing the entire dash to remove the heater case to replace the defective blend door actuator.