Dangling Vacuum line no ac - JeepForum.com

 
LinkBack Thread Tools
post #1 of 13 Old 06-11-2013, 06:45 PM Thread Starter
jimmyz67
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Port Orange
Posts: 6
Dangling Vacuum line no ac

I found my AC only blew out of defroster, after tracing all my vacuum lines I found the line going into the "mode door" was just dangling loose, and I can't seem to find where to plug it in. I desperately need my ac in the Florida heat ! See attached pictures.

edit: 1998 ZJ with 4.0 I6

Attached Thumbnails
IMG_20130611_200621.jpg   IMG_20130611_200629.jpg  

Last edited by jimmyz67; 06-11-2013 at 07:21 PM.
jimmyz67 is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 06-11-2013, 07:18 PM
coralman
USER OF PARTS CATALOGS
 
coralman's Avatar
1998 ZJ 
 
Join Date: Jul 2010
Location: florida
Posts: 7,829
If I'm looking at it right the "mode door" is electrically operated. The mode door arm #39 looks like it goes into the electric motor #38. Since the system has defaulted to defrost is it possible that is your supply line? Does it have vacumn applied? Do any of the lines have vacumn applied?

acdoot.jpg

Info on projects and repairs categorized by system

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Originally Posted by HighLonesome
lol...if life is as a simple as a 5.9 making you happy, I'd say go ahead and buy it on impulse. ZJs are the way of Zen. Wax on, wax off
coralman is online now  
post #3 of 13 Old 06-11-2013, 07:20 PM
coralman
USER OF PARTS CATALOGS
 
coralman's Avatar
1998 ZJ 
 
Join Date: Jul 2010
Location: florida
Posts: 7,829
Fill out your profile so we can help you better by knowing year ect.

Info on projects and repairs categorized by system

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Originally Posted by HighLonesome
lol...if life is as a simple as a 5.9 making you happy, I'd say go ahead and buy it on impulse. ZJs are the way of Zen. Wax on, wax off
coralman is online now  
 
post #4 of 13 Old 06-11-2013, 07:21 PM Thread Starter
jimmyz67
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Port Orange
Posts: 6
This line is coming off the door that switches from defrost vents to air vent. I can push the arm down with my finger and it comes out the vents but without vacuum applied it closes again. I believe it is part #6 on your chart.
jimmyz67 is offline  
post #5 of 13 Old 06-11-2013, 07:41 PM
coralman
USER OF PARTS CATALOGS
 
coralman's Avatar
1998 ZJ 
 
Join Date: Jul 2010
Location: florida
Posts: 7,829
Do any of the lines have vacumn? Hear any hissing? The main vac line comes through the firewall.

Info on projects and repairs categorized by system

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Originally Posted by HighLonesome
lol...if life is as a simple as a 5.9 making you happy, I'd say go ahead and buy it on impulse. ZJs are the way of Zen. Wax on, wax off
coralman is online now  
post #6 of 13 Old 06-11-2013, 07:48 PM Thread Starter
jimmyz67
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Port Orange
Posts: 6
It was working flawlessly then just went kaput. All of the underhood stuff seems to work. I need to plug that black line back into its nipple under the dash but i dont see where to put it.
jimmyz67 is offline  
post #7 of 13 Old 06-11-2013, 07:57 PM
96zedjay
Registered User
1996 ZJ 
 
Join Date: Jun 2012
Location: Cincinnati
Posts: 423
Just follow the other vacuum lines back up toward the Heat/AC control......They all end there.
96zedjay is offline  
post #8 of 13 Old 06-11-2013, 08:03 PM Thread Starter
jimmyz67
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Port Orange
Posts: 6
There is a green line that is cut. Is it possible the green is supposed to go the vacuum motor that switches defrost to panel ? Looks like a PO might have re routed around that with this black tubing. The black tubing pictured does not match the rest of the tubes. If you see in my first picture a brown vac line with a elbow piece, there is a green one dangling not connected. So this is prob some kinda hack job Im lookin at ?
jimmyz67 is offline  
post #9 of 13 Old 06-11-2013, 08:09 PM
96zedjay
Registered User
1996 ZJ 
 
Join Date: Jun 2012
Location: Cincinnati
Posts: 423
My FSM says green line to the diaphram that has the black line hanging. :-)
96zedjay is offline  
post #10 of 13 Old 06-11-2013, 08:11 PM Thread Starter
jimmyz67
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Port Orange
Posts: 6
Thank you zedjay. I will try to get some spare line and some connectors tomorrow to get that hooked back up right. Any ideas on where this black line could have been plugged into to have the panel vents blowing previously ? Thanks for all the help so far guys
jimmyz67 is offline  
post #11 of 13 Old 06-12-2013, 01:00 AM
AVR2
Registered User
2002 WJ 
 
Join Date: Apr 2007
Location: UK
Posts: 3,812
A Jeep AC guru once told me that there's a vacuum line on the passenger side of the trans tunnel that can get pulled loose. If it does, the only way to reconnect it is to pull the dash. I hope you don't have that particular problem
AVR2 is offline  
post #12 of 13 Old 06-12-2013, 02:17 AM
Uniblurb
Web Wheeler
 
Uniblurb's Avatar
1996 ZJ 
 
Join Date: Jan 2012
Location: Central
Posts: 7,766
Just went out and looked under the dash of my 96 4.0 manual system. The brown and yellow lines are correct where they are. The green line w/elbow goes on the bottom of the upright diaphragm as 96zedjay already pointed out. You may need to pull the HVAC control unit out of the dash and see if the OP didn't somehow run a new black vacuum line, which is bigger than most/not OE, as the main switch feed. Check the outside of the firewall in the engine compartment where the evaporator tubes go through for the a vacuum line coming off of the "T" which is normally the main switch feed. Typically it's a small black plastic line going through the firewall next to the AC tube which tends to break. Maybe the OP ran that larger black line instead somehow? Good luck.

96 4.0 ZJ Laredo, 2004 4.7L WJ Limited, 93 4.0 XJ (spare), 96 4.0 XJ (son's)


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.
Uniblurb is offline  
post #13 of 13 Old 06-12-2013, 11:33 AM Thread Starter
jimmyz67
Registered User
1998 ZJ 
 
Join Date: Jun 2013
Location: Port Orange
Posts: 6
I wanted to update you guys on my issue. I removed the dash controls so I could get a better look at the lines. I found the two pieces of green tube that had been cut/broken. I fed the black line through the side of the dash and pulled it to the HVAC control cavity. From there I hooked it up to the green line coming from the control panel. The system then returned to normal operation ! I will be dropping by the parts store to get some T fitting and extra line so I can fit the hose on more securely. Thanks for all the replies !
jimmyz67 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome