[1986nate]

I got reading through the archives and the diffuser or whatever you want to call it that selects where the air comes out can get stuck and that is why mine would not switch as I changed the temperature on mine.

If this is the problem, turn the car on(don't have to start it) and turn the auto or econ setting on and turn the temp all the way down to 65. Then reach above and to the right of the accelerator pedal and there is a lever, with it on the lowest temp it should go all the way towards the back of the car, if it doesn't manually push it all the way and then be sure to check that if you turn the heat all the way up, the lever should be in the middle of the guide but closer to the front part of it(closer towards front of car). And in the defrost setting it should be all the way to the front of that guide(towards front of car).

I was not completely successful on mine as when I pushed it all the way to the back with the coldest setting on, it then would not go fully into the defrost setting on its own and vice versa... So I am thinking that I may need to put a new unit in mine as I don't think there is anything I can do as I tried moving the lever and switching the settings repeatedly to no avail.

Hopefully though this will help others.