While driving my wife's Caravan the other day, I noticed that there is low volume as far as the airflow from the dash vents. We get nice cold air so the A/C compressor is OK, but just not much cool airflow. I have tried rotating the selector from one extreme to the other, and this seemed to increase the air volume slightly, yet nothing like the flow in my other car which will flat blast you out. Is there possibly a problem with a vacuum motor operated door that ducts the air from one place to another? Or is that all mechanical with cables controlling air doors. I'm thinking that despite the fan on high, the air is not coming out of the vents because of a mostly closed duct door.
Any suggestions as to where to look? I hate to take it to the dealer if I can take care of it myself.