Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum > Vent Type Selector Not Working

Join Wrangler Forum Today


Thread: Vent Type Selector Not Working Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
10-29-2013 06:15 AM
buffa98 After reading through this thread, I am going for a vacumn leak hunt. I get floor or face but the defrost vents are hit and miss. Will report back results.
10-25-2013 02:20 PM
Jgood738 Thanks. Pulling it into garage tomorrow and will take a look.
10-24-2013 03:57 PM
08JJ
Quote:
Originally Posted by Jgood738 View Post
I can only get mine to blow air through the vents. No feet and no defrost. It feels like the control knob isn't doing anything. (lots of play) There is also a small hiss of air in increments coming from under dash. Started doing it this morning when I really needed the defrost.
Check vacuum hoses.....especially the one that runs down the back side of battery down to the passenger side inner fender. There is a box there and my hose split which cause a huge loss in vacuum, enough to set off the check engine light. This also caused my air to only blow out the heat no matter where you set it.
10-24-2013 07:21 AM
Jgood738 I can only get mine to blow air through the vents. No feet and no defrost. It feels like the control knob isn't doing anything. (lots of play) There is also a small hiss of air in increments coming from under dash. Started doing it this morning when I really needed the defrost.
10-16-2013 09:54 AM
wstalker
similar issues

I just bought my first jeep....a 97 tj....ac slide switches are very hard to move and more than likely just need a good cleaning....is it easy enough to pull that console??
10-15-2013 03:51 PM
darkcityavenger
Problem fixed

I fixed my problem FINALLY! Turns out the previous owner had monkied around with the AC/Heat control knob and broke the three prong electrical plug off on back and had rigged it back up. He had switched the power wire and AC power wire thus causing the blower to only work on one of the 5 setting requiring AC. Did a switcharoo and all settings work now. I did realize the vacuum valve under the dash that controls the def vent had broke and the arm had came out of the hole. I placed a little gorilla super glue on the very tip of the arm that sticks in the hole and carefully stuck it back in. Know it works fine and all vents and switch positions work great. Let me know if anyone is having any problems like mine and I would be glad to walk you through what I did in detail.
07-24-2013 02:16 PM
2footin
Quote:
Originally Posted by Zurn View Post
The knob on mine was broken out at the shaft for the switch. Was a quick easy fix. You could see where someone prior had epoxied the knob together but it failed again. New knob, 12 bucks shipped.

the control knob roached out in mine
turning the knob felt normal I first thought the control was bad and was ready to start tearing parts out till I pulled the knob and looked good
the point that I am trying to make is check that the knob is actually turning the control shaft before tearing apart the dash and ordering parts that you don't need
07-23-2013 03:57 PM
08JJ
Quote:
Originally Posted by Neil F. View Post

You are confusing issues. The vent control is vacuum actuated. The blower resistor is only associated with the HVAC fan speed and is indepdent of the vent control
Yea, had a brain fart because both of mine went bad at the same time. To clarify......one speed on the blower and the resistor is bad most likely...about $10 on e-bay. My vacuum line also tore on the vacuum box under the front passenger fender directly under the battery. Kinda hard to find, have to run your hand up the opening in the fender well. Here is a pick of your TJ vacuum lines...hope this helps.



Attachment 276547
07-23-2013 08:12 AM
BradysTJ Subscribed
07-23-2013 07:07 AM
Neil F.
Quote:
Originally Posted by 08JJ View Post
Not sure, sounds like the switch. I would try the resistor first since its the cheapest part.

You are confusing issues. The vent control is vacuum actuated. The blower resistor is only associated with the HVAC fan speed and is indepdent of the vent control
07-23-2013 06:46 AM
darkcityavenger Thanks 08JJ I may just get a switch off ebay it seems easy enough to change out. Have a good one
07-23-2013 06:34 AM
Wattapunk
Quote:
Originally Posted by boonefhh View Post
the switch is stuck in the vent/feet position and won't turn at all.
2 things you can check that are often the cause of your issues.

1) cracked or disconnected vacuum hose causing a vacuum leak. Check the hose #2 in the diagram by the manifold, then check all hoses under the hood for connections and condition :

2: Look under the dash and inspect the operation of the 3 vacuum actuators while you operate the mode switch. Each one controls different vent selections and should move when selected:



FYI- 08JJ, the blower resistor only affects fan speed and not the mode vent selection.
07-23-2013 04:38 AM
08JJ
Quote:
Originally Posted by darkcityavenger View Post
Sounds like alot of experience on this tread so please help . I've read alot of threads but can't find my problem. When my mode switch is on one of the AC ones all is good, I have hot and cold and all speeds work on fan but when I switch to just vent or floor (not one of the AC ones) neither one blows air. As I turn switch to the right for defrost or defrost and floor it starts blowing again. So in summary all works but the vent and floor setting not in AC mode or defrost mode.
Not sure, sounds like the switch. I would try the resistor first since its the cheapest part.
07-23-2013 04:36 AM
08JJ
Quote:
Originally Posted by boonefhh View Post
the switch is stuck in the vent/feet position and won't turn at all.
Sounds like its time for a new switch. What year is your vehicle?
07-22-2013 09:18 PM
boonefhh the switch is stuck in the vent/feet position and won't turn at all.
07-22-2013 09:09 PM
darkcityavenger Sounds like alot of experience on this tread so please help . I've read alot of threads but can't find my problem. When my mode switch is on one of the AC ones all is good, I have hot and cold and all speeds work on fan but when I switch to just vent or floor (not one of the AC ones) neither one blows air. As I turn switch to the right for defrost or defrost and floor it starts blowing again. So in summary all works but the vent and floor setting not in AC mode or defrost mode.
06-06-2013 07:25 PM
08JJ
I had a problem also with a split hose

Mine was also on the box behind the front passenger wheel. I also had only high speed and changed the relay in the blower and it works great now. Finding that box behind the right wheel well was fun but if you rub your fingers on the side you will feel the plug if it has fallen off like mine.
02-21-2013 11:04 PM
MaxTurner
Quote:
Originally Posted by jackattack615
I have the same problem but and I have checked all lines which seem to be fine. I can hear air escaping through the actual dial itself. Would this be an O ring problem? Is there ant diagrams which show what is what behind the dial?
I had the same problem. I checked all the lines and everything seemed okay and could hear air escaping from the dial. I found the switch on eBay and replaced it. Works great now.
02-21-2013 03:45 PM
jackattack615 I have the same problem but and I have checked all lines which seem to be fine. I can hear air escaping through the actual dial itself. Would this be an O ring problem? Is there ant diagrams which show what is what behind the dial?
12-19-2012 10:13 AM
Big Sarge My heat was working great (after replacing the resistor) except for when I was at higher speeds the heat would automatically switch to defrost. After reading this post and following the diagram from Hardermods, I fixed my vacum leak for $2.73. I bought the 7/64 rubber vacum line (3 feet) from advance auto. The rubber line fit great inside of the rubber boots, and I hope that it will last longer than the hard plastic. Thanks again, and I hope that I can contribute to this forum as well.
12-11-2012 09:00 AM
Zurn The knob on mine was broken out at the shaft for the switch. Was a quick easy fix. You could see where someone prior had epoxied the knob together but it failed again. New knob, 12 bucks shipped.
12-11-2012 07:33 AM
Jaxon1023 I have the opposite problem, the lever for cold and hot is stuck and will only blow hot air not cold. I have ac in mine.
12-11-2012 06:46 AM
Katalst I just wanted to say thanks to all of you! Especially Hardermods for the diagram. I bought a 2001 tj yesterday. Had this problem. told dealer I would fix it if lowered price. you guys rock.
10-04-2012 12:58 PM
AJeepThing1962
Thanks Hardermods

Sounds like you have a vacuum leak, Here is a diagram to follow and find your leak



I can't thank you enough for this, I live in AZ and its been a pretty hot summer with A/C only coming out of the Defroster. My problem was at the connection looking up from under passenger side to box #8. Bam, right there the line was disconnected and without the diagram you supplied above, I would have never fugured out where it went. The rubber end had a 1/4" split at the connecting end so even when it was on it was still leaking. This explains why I've always had a problem swithing from DEF=>floor=>vents. I put a piece of heatshrink over the end and heated/shrunk it up and now for the 1st time I can switch between all selector locations on the dial. I'm ticked at myself for procrastinating so long as all I could find to date and from friends is it in the blender door control under that dash and you have to rip the dash apart. Man, I'm glad I didn't go down that road.
Thanks again, this is an awesome forum, hopefully I can repay the debt someday.
06-28-2012 06:25 PM
JustAMe
Thanks

THANK YOU!!!

Dreaded code 2096 told me I most likely had a vacuum leak but I really wasn't sure where to start looking for it. Hose 2 was loose and cracked at the elbow to port 5. Don't know if that's the only leak but $3 worth of hose to give it a shot and grand total of 2 minutes looking for it. Crossing fingers this is it (and it'll stop blasting hot air on my foot too).

Quote:
Originally Posted by Hardermods View Post
Sounds like you have a vacuum leak, Here is a diagram to follow and find your leak



Most typically the connecting below the throttle body at port 5 to hose 2 comes loose and falls off so I would start there.

If it is connected and not cracked or anything I would then lay under the vehicle right behind the front passenger side wheel and look up along the frame/firewall for the boxed labeled 8, it will have one line coming off the side of it and sometimes gets eaten by battery acid so make sure it is connected and not cracked.

If neither one of those are your solution then I would just follow the line all the way and look for any kinks, cracks, or breaks.
10-20-2011 05:35 PM
abader01
Quote:
Originally Posted by Hardermods View Post
Sounds like you have a vacuum leak, Here is a diagram to follow and find your leak



Most typically the connecting below the throttle body at port 5 to hose 2 comes loose and falls off so I would start there.

If it is connected and not cracked or anything I would then lay under the vehicle right behind the front passenger side wheel and look up along the frame/firewall for the boxed labeled 8, it will have one line coming off the side of it and sometimes gets eaten by battery acid so make sure it is connected and not cracked.

If neither one of those are your solution then I would just follow the line all the way and look for any kinks, cracks, or breaks.
NICE! It was totally a vacuum leak! I went through the steps and found a cracked hose fitting on the side of box 8 behind the passenger front tire.
A little electrical tape around the fitting and it went back on nice and tight.

Hopped back in the cab and moved around the vent select, and, voila! Works brilliantly.

Thanks wrangler forum! This is awesome!!!!
10-14-2011 05:58 AM
robbiecc pretty much had the same prob-defrost and floor would work but dash vents would not. dropped the panel from below the wheel to get a visual-make sure nothing was broke/disconnected. ran it through the different selections to see which actuators were working and swapped one working to the one that wasn't working and it was ok(worked) noted the vac line color and followed it back to a break just behind the controls(can see alot if you remove the glove box) at what looked like a junction box looking thing. PO must of cut it installing new radio or the sat stuff. hooked it up and works fine now.
if only 1 function is not working i'd be looking at the actuator(broke or jamed arm-non working actuator) and follow it back to the controlls. willing to bet it's somewhere between where the single vac line comes in and is split to 3. if it was a main vac line all 3 probably wouldn't work
10-14-2011 01:51 AM
JRIEDY85 Yeah the knob won't turn at all.
10-13-2011 08:14 PM
Devon Not sure if the OP meant the knob won't turn or if it turns but he can't get air to come out of the vents.

Mine would only come out of the defrost and floor vents. I thought I would have to tear the dash apart but it was a 3 inch vacuum hose that is underneath the battery, the hose was split. You can't see it unless you remove the battery! O'Rielly's just cut off a 4 inch piece of hose and gave it to me. Problem solved.
10-13-2011 06:14 PM
Hardermods No my response was for the OP.

Your saying you cannot turn the knob at all? Or when you turn it nothing happens?
This thread has more than 30 replies. Click here to review the whole thread.

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 12:40 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC