I have a 04 Wrangler and recently I've lost control of the vent selector. I can't select AC or direct air venting. When turning the vent selector knob it doesn't click from each setting to the next. The blower seems to be working fine in the sence that you can hear it as you turn it up from min to max but no air will blow out of the dash vents. Also, cold air seems to be coming from the defrost vents all the time now.
Also, about the same time this started to happen a clicking noise is present in the engine bay. The noise will occur about every 30 seconds.
Any Suggestions as what the problem is and how to fix.
sounds electrical to me, like your switch has gone out. It may also be the doors in your heater/AC box. That was my problem. If one of those breaks then you usually only get air out of one vent. The blower will still work thought. The broken door trying to move may be the clicking noise you hear.
I had the exact same problem in my 02. Turned out it is a vacuum line that controls the vent selection. Look underneath your battery tray and you'll see a black plastic box with 3 or 4 rubber hoses coming out of it. Make sure everything is connected. Worked for me. Let me know.
As for the selector not working, check the knob itself. At one point the back tabs that keep the dial centered were broken and all I needed were new knobs. Mine would spin all over the place. The cold issue could be a thermostat. Not quite sure what the clicking in the engine compartment might be without hearing it. Just some other options if the others didn't work. Good luck.
Yep. Common problem. I had two of the three cracked so I ordered three to have a spare on hand. I was able to get one working for a good while with crazy glue. Let it dry disconnected if you do this though.