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Old 09-16-2009, 06:48 PM   #1
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Defrost selector switch and blower motor

I have read the numerous other posts.

My selector defrost switch only blows out the defrost vents. So from previous posts I checked the vacuum lines from the selector switch to the blower housing and all is good.
I then checked the vacuum line running from the intake manifold that runs to a "T". That line is good also. I then followed the other line and found it disconnected with a split on the rubber end, which is the probable cause of it coming off.
Where does it go to? I can't seem to find a nipple in the engine bay for it.

See pictures

This is a 2002 TJ , No A/C, 5 speed, 4.0L


One other problem is the blower only works on the two highest setting. I have checked the plug ends for melted switches etc and all is good with the switches so I am thinking it is the reo-stat or what ever you call it from other posts.

Where is that thing. I can't see what is described in other posts. Can some post a pic of where it is.
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Old 09-17-2009, 04:07 PM   #2
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Can someone open the hood of their Jeep and see where this leads to.

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Old 09-17-2009, 04:09 PM   #3
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And for all of those looking for the resistor pack on the 2002 jeep, here is a pic of the location and what it looks like.
You have to take the glove box off.
Look to the lower right.
Remove wire harness that has 4 wires. Have to undo the clip and pull back on the red locking clip then lift the small tab.
Remove the two 5/16 screws holding it in place - One you get through the glove box opening and the other from the bottom.
I unscrewed my curtosy light for some additional room.

Hope this assists.
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Old 09-17-2009, 04:47 PM   #4
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The disconnected vacuum line goes to the vacuum reservoir.

The vacuum reservoir is mounted to the rear of the
right front inner fender wheelhouse in the engine
compartment, under the battery tray.

I fixed the cracked line and pluged it in and checked my controls and they all now work. Defrost, Floor heat etc.

Thanks to the member that enables us to download factory service manuals. After some checking and reading figured it out.

FSM is a god send.
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Old 09-17-2009, 07:40 PM   #5
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I actually just fixed that today also!!!

Same as above as for location. I just slid under my passenger side and looked up at the fender area below the battery. It is in a recess and connects to a canister that is a little box shaped with a nipple sticking out. I actually cut the split portion of the rubber boot off and was able to reconnect. Now it works GREAT! Souldn't take too much looking to find it.
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Old 10-18-2009, 09:52 PM   #6
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Fixed vacuum hose end... still not working.

I was so excited to find this string of posts as I have the same defrost/vent selector switch problem (turns off correctly but only blows defrost no matter which indicator it is set to). I did find the vacuum hose in question (hooks under passenger side wheel well), trimmed the shabby end (it was split pretty badly), crossed my fingers ... but still the same problem. Any other ideas out there?
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Old 10-18-2009, 10:32 PM   #7
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The original post was from a month ago. You may have to take the dash benzil off, take the heater contol out, and check if you can see if the selector lever is engaged with the sliding switch on "box". If you can't see, two small screws will take it off, and you can check if it has been engaged on the selector lever. Place both the switch and selector in the same position, and re-assemble.

To remove the benzil, I found if you pull the top back, and then squeeze & pull the bottom, it should come off. Take the ash tray out first.
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Old 11-30-2009, 06:43 PM   #8
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Question ?

hey was only your defrost working? None of the other controls worked? I am having a similar problem and I really couldnt tell by your post... thanks in advance..
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Old 02-26-2012, 09:19 PM   #9
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Awww this one of the reasons I joined this forum ..i have the same problem that I only get heat blowing from the defroster.. i 'll be checking for this hose in a day or so . to see if thats my problem.. If i took it to the dealer i know they would of hit me big time just to cut an inch off the hose and replace it .. see I hope I saved some money joining you guys
lots of knowlege here. Thanks

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