No Defrost in F150

[Black_Bay]

My defrost, and everything but the dash vents, stopped working. The temp selector still works but I can only get it through the dash vets. Any Ford guys have an idea what may be going on? I haven't taken it in anyplace or checked anything myself. This just happened yesterday.

Thanks

[Scott K]

So it is coming out of the a/c vents? Or the defrost vents? Is this EATC? Automatic temp control? Has buttons, or dials? If it is EATC, and is coming out of the defrost, then check to make sure you have vacuum going to the control head, if you do, replace the control head. Or you can re seal it your self, if you are mechanical.

[fishing tech]

What year. Defrost is the default if you lose vacuum. Depending on the year there was a foam piece that would come off the door in the plenuim and cause the door not to move.

[Black_Bay]

It's an '08 with dial controls, no auto temp control and I don't know what EATC is. I get air through the a/c vents and a bit through the floor but not much. I just hope this isn't one of those deals where the whole dash has to come off. From what I've heard it's not a fun job.

[fishing tech]

08 i believe is an electric motor for the function door. I will check tomorrow at work and let you know.

[fishing tech]

08 have problems with the foam seal coming off inside the plenuim causing the door not to move. If this is what happened, the dash and plenuim will need to be removed.

[Black_Bay]

Thanks. I was afraid the dash would have to come off.