A/C Not Blowing forward

[alexu7890]

My AC is working on my 97 TJ but it only blows to the front windshield no matter what position I set the controls on. It blows good and super cold but I don't know why it started doing this. It just started about two weeks ago before that it was working fine. Any suggestion ?

 

[TerryMason]

You've got a vacuum leak somewhere.

The fan / AC output selector is controlled by engine vacuum, and the default position is defrost. When you select something else then knob uses engine vacuum to move the door, but if there is a vacuum leak then it won't be able to do that.

Here's what my problem was:
http://www.jeepz.com/forum/cj-yj-tj-jk/23305-only-defroster-works.html#post189371

 

[alexu7890]

Yea I looked for the Leo today and found it. It was under the battery where there's a three way split. Thanks I appreciate it.