Did a run to Yeehaw Junction today. On the way out the dashboard vents worked flawlessly (needed the A/C). When I started it up at the junction no more air out of them though. Regardless of the selector setting (max a/c|norm a/c|vent, Mix, floor or window) the air comes out of the window defroster vents and the floor vents. The 'Off' setting still functions. Also, there is no change in noise when I switch from max a/c to norm a/c. Which there normally was. When I braked for a trafic light, I got some flow back through the dash vents but still most of it came the floor & defroster vents.
I'm figuring some valve or flap is stuck or broken. Unfortunately my Chilton does not tell me where the unit is that does the distribution of the air. So before I take the dash apart, I'd like to know where to look.
The fan switch and temperature control switch are working properly. Could the fault be in the selector switch or in the unit (whereever that is hiding) that determines the route for the ar to take?
Thanks in advance