My 97 f150 2wd 4.6 a/c is not blowing out vents when set on panel. Low. Med or high any thoughts?

 

You're in the wrong section but the basic operation of the HVAC section is the same, there are some mechanical controls and some vacuum operated controls in this system and obviously something is broken in your truck. You will have to get inside the dash to see what is going on, I'd start by removing the control panel to see if anything has become disconnected or is broken, if that is all good you have to get inside the heater box, there are a couple doors in there that direct air to the different vents.