This is a update to my air conditioning problem. I brought the van back to the dealer and they check it out again. They said the coolant has not leaked out so no leak. They agree that the vent temperature is not right. It should be really around 40 degrees at the vent. They are stumped as to what might be wrong. They said they have contacted Ford to get a resolution.
As the weather and humidity have gotten more extreme here in the South, I began to wonder if my AC was working to capacity. I took it in to the dealer to check. The tech had a remote sensing thermometer. By searching around carefully in the center vent, he was able to get a reading of 30 degrees. It was interesting that by aiming the thermometer just a few millimeters one way or another, the reading would vary by, maybe 5 degrees. This was with AC on Max, fan at 3, and ambient temp of 78 degrees. Not sure if reading would be different, on a hot day. Anyway, I was assured that the output was as good as it gets.
I had had a different problem that stumped the dealer techs. When they went to Ford for advice, they finally did nail the problem. As long as your guys are diligent about getting help from Ford, they'll probably get it worked out.