ANSWERS: 1
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This is a common problem with the Explorer/Navigator. You can access the blend door actuator motor above the transmission tunnel at the bottom of the heater box. The axle connector is plastic and tends to break, leaving no control over the blend door. The heater box is the same on the F150 and the Explorer and both suffer from this problem. The dealer fix is to remove the heater box and replace the plastic door. This process requires removing the steering wheel, dash panel, evacuating the AC system, etc., and is a ~$1000 job. Check the HeaterTreater listing on Ebay for more diagnostic information and a cheap easy solution to the problem. www.heatertreater.net cgallen
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