I have a 99 ranger and the vent is stuck in the defrost/ floor position. Where is the door that controls where the air goes? Any idea for a quick fix? My a/c works but would like the air to come out vents rather than blow on windshield. Thanks for your help

 

the blend door is behind the glove box. that could be the problem. but when this happened to me, it was a loss of vacuum under the hood, and the system just defaulted to floor/defrost. so i'd check for vacuum leaks before you go looking at the blend door.

 

check the plastic vac line the goes from the vac reservoir to the firewall. Mine broke as it passes under the A/C drier/accumulator.

 

Here's a couple of links that should help.

Link 1

Link 2

 

Thanks guys,, it was the vacume line. all good now.

 

Happened to me once vacuum line came disconnected from vacuum resevoir. Passenger side fromt under coolant resevoir