2005 AC vents question

http://images.thecarconnection.com/...ing-natl-temperature-controls_100272354_m.jpg this image is from a 2008 so it looks slightly different but you want to make sure the buttons saying "front" and "rear" near the bottom are off.

I would also make sure "auto" is off and that the picture with a single horiontal arrow pointing to the head is selected.

 

You may have a problem with the evaporator box. That has a bunch of actuators on it and they have a tendency to fail/break.

 

I have the same problem on my '01. The actuator box mentioned by Seilerts is behind the dash in the center and it is a b**ch to get to. You can see the actuators from the drivers side and you can even remove the servos. I removed the servos and manually moved the actuators to various positions but could never get air out of the center vents. The next step for me would be to remove the air duct control assy (not sure of the proper name but I think its called evap box) to see if something is blocking the movement of the valve flaps. I chose not to do it because it would mean removing the entire dash. It seems you have the same problem as me.

 

There's only one way to tell: Try it. As I stated, it didn't work for me but I probably have a rodent nest or something in the evap box (who knows). It never worked when I bought it and I haven't been able to fix it yet (because I'm too lazy). In my case I'm nearly certain that the valves in the evap box are blocked by something. I might just take this on this weekend (on second thought, naaaahh).

 

I hate to ask this question, but are the vents turned on? Underneath the vent is the rotary wheel that opens and closes the vent. I did not see you mention you checked them.

 

That's funny. I hope that's his problem but, its not mine.

 

just solved the center vent problem on my 2005! while laying upside down with my head near the brake pedal had my daughter switch the controls from front defrost to floor then to front vents. this order of switching should bring the arm with the pin down one position each time. it worked for the first switch but wouldn't complete the second movement. i wedged my hand up there and helped it slightly and it went with a slight crunching sound. i believe there is trash in the grooves of the white plastic and should be able to clean it out and lubricate it enough to work.