Edmunds Answers



  • karjunkie 10/13/09 3:45 pm PST

    I think it is the blend door in the front section of the HVAC system. The Expedition has problems with the blend door breaking. The basic problem is that the stepper motor that operates the blend door is too strong for the door hardware and eventually breaks the plastic door off the metal pivot points. A company called HeaterTreater has repair kits for the Expedition. The actuator motor is located on the bottom of the heater box above the transmission tunnel and you will have to remove the console and various trim pieces to get to it. Additional information is available on their web site at www.heatertreater.net


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