Great info, guys. On our 02 Cargo, I just replaced the blend door actuator with a new one from Kragen/O'really, and the motor cycling is gone. It was a bitsch to access the actuatior until I took the entire bezel off. There are two screws at the top you can access after removing the radio, and two at the bottom, visible behind the cupholder. A flashlight is your friend here.
In typical Ford style, the screws holding the bezel have 7 mm heads, and the ones holding the actuator are 8 mm. To fix a Ford, you need every tool in your garage - plus one you have to borrow or buy. I thought it was only modern Fords, until I bought a Model T. On all pre-1949 Fords, you have to drop the rearend to lift the radiator cap.
GB