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Topic Review (Newest First)
03-14-2012 02:42 PM
Originally Posted by HverbeckCtacey
That may be where the problem is.
Could you post this pix again. Can't see it.
03-14-2012 03:34 AM
HverbeckCtacey That may be where the problem is.
03-14-2012 01:40 AM
JerkyBoy Had to fix this exact thing on my dodge truck.
Different spot for the leak but same results.
03-14-2012 01:36 AM
distortedtj Click link below. Photos in thread.....
03-14-2012 01:29 AM
MunchieTJ Heyy mine is doing the same things! Amazing info on this forum!
03-11-2012 04:54 PM
MatthewB Had the same issue with my 2005. I nearly tore my whole dash apart looking for what was causing it before I did some easy research on the net. It's the vacuum hose. It's come loose. On my 2005 the hose was attached to the drivers side engine. More towards the window than the front of the engine. It was about 8-10 inches from the back of the engine (window) and about 4 inches down from the top of the engine. Small hose just hanging next to where it was suppossed to be attached. I used a zip cord, reattached the hose and zip tied that sucker down hard. Hasn't come off yet. Ias mentioned the hose is attached to the passenger side fire wall, goes down under the battery and winds up on the engine. Once reattached all vents working. Took more time following the hose than reattaching and cost nothing to do. Good luck.
03-10-2012 04:16 PM
Originally Posted by DevilDogDoc View Post
Your not getting vacuum to the pods that control the vent position. It defaults to defrost when it has no input.
Same thing happened to my jeep. Vacuum line came off, put it back on and good to go.
03-10-2012 01:02 AM
Overthink What year jeep..does your ac unit have the slide levers or knobs?
03-09-2012 05:13 PM
MillerFam As others have said, its probably a vacuum leak. My 98 Sahara had the same issue when I bought it. A mechanic spent all kinds of money on new switch boards and other stuff. None of it worked. Than he popped the hood and there was the vacuum line just hanging. It appeared it had contacted hot metal and burned completely through. He replaced that cheap tube and all worked fine.
03-09-2012 04:23 PM
Southernmost Jeeper
Originally Posted by sloppywood
As the title says. Any advice?
Mine was doing that, and it was a vacuum leak. There is a vacuum hose on the passenger side connected to the firewall, close to the battery, find it and follow it till you find the leak. Took me five min to find and fix it once I knew what I was looking for.
03-09-2012 02:51 PM
DevilDogDoc Your not getting vacuum to the pods that control the vent position. It defaults to defrost when it has no input.
03-09-2012 02:47 PM
Bone Can you hear the baffles opening/closing when you switch from defrost to vent? That may be where the problem is.
03-09-2012 02:36 PM
bcpaddler X2 mine is doing the same thing.

Have read that the gears may be stripped out and it's stuck on what ever setting (in this case, defrost) it was last on?
03-09-2012 02:33 PM
Ac only blowing from defrost vent

As the title says. Any advice?

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