My vents work weird. They will blow air out if on setting 1 and under 2000 rpm. They will not blow air out if over 2000 rpm or any higher fan settings. The defroster will blow at any speed and any rpm. I took my dash apart and was still lost on what I was trying to find? Anybody have a good write up or atleast a picture or the parts I am getting too? I will do a write up for the tj if someone is whiling to help!

who needs a heater anyways?

jk mine went out again =/ same thing 2 winters ago

I am still driving doorless. Would be nice to get a little bit warmer.

I have a Jeep Wrangler Sport 2003. The Air operates when I turn it on to the window and floor fine but when I direct it to the face no air comes out and it sounds like it is blocked.

You have a vacume leak. The flap stays in the defrost position until you select another such as floor or vent. the vacume created by the engine controls the flap through small vacume lines. When you have a leak there is not enough vacume to hold the flap to desired setting and it goes back to the defrost position. Start under the hood and check your vacume lines. Mine were broken in my Ram van due tu heat and age under the hood.

X2 on the vacuum leak. Find the line that "Ts" just behind your battery, and follow it down. You will have to get underneath your Jeep. That line will drop down and go into the fender into about 3" of rubber 2/16" tubing, and then plug into a black in color, plastic box.

Unplug that 3" long piece of rubber tubing and examine it closely for cracks or splits. You will find that you probably have to trim off about 1/2" of cracked rubber hose. Push it back onto the nipple on the plastic box, and BOOM you have properly working air vents.

I followed vacuum hoses and zip tied vacuum hoses onto fittings for nearly 6 months before I found this. My heat and A/C would change airflow directions, or stop, if I accelerated. I was told the air door was broken, but it was not. I was told the vacuum was leaking at the manifold, but it was not...

Hope this helps. It sure is nice to have good warm heat that blows where I want it to, when I want it to!!

Oh yeah, mine is a 2002 TJ, and that line is on the passenger side of the Jeep.

My defrost vent all of a sudden wont open ... All my other vents work fine. This happened before just after i bought it and the dealer fixed it... now my dealer has closed down, moved and re opened under a different name.

Thanks so much! That worked like a champ- I found the hose and it was all frayed and cracked. I just cut off that part with scissors and pushed it back in and it worked. I've been dealing with this for a year and finally decided to check out this forum.