Vacuum line to heater valve - JeepForum.com
 1Likes
  • 1 Post By sAe23
 
LinkBack Thread Tools
post #1 of 8 Old 12-06-2019, 02:56 PM Thread Starter
sAe23
Registered User
1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,378
Vacuum line to heater valve

Hello,
I have had my heater core bypassed for a while now.
The other day I noticed that a vacuum line attached to the diverter valve was broken.


I can't find where it attaches to (or any other part of the line).
I checked my copy of the FSM but didn't find any reference to this line.


Does anyone know where or what it connects to?


TIA


Steve

sAe23 is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 12-06-2019, 08:25 PM Thread Starter
sAe23
Registered User
1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,378
So I looked through the FSM again and found this diagram...
Does anyone know where that "manifold" is?
TIA
Attached Images
 
sAe23 is offline  
post #3 of 8 Old 12-08-2019, 09:32 AM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 12,049
This help?
Attached Thumbnails
Vac ball routing.jpg  

If you own a Renix Jeep, you must check this out:


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


My Jeep technical photos:


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
cruiser54 is offline  
 
post #4 of 8 Old 12-09-2019, 06:27 PM
KF4SQB
Registered User
1994 XJ Cherokee 
 
Join Date: Nov 2009
Location: SouthWest Georgia
Posts: 711
I believe that is referring to the vacuum hose harness that plugs onto the back of the HVAC control panel in the dash. That is, ultimately, where the vacuum hose to the heater valve goes to.

4-wheeling: because football, basketball, baseball, and golf only require one ball!


Confidence: The feeling you get just before you fully understand the situation!
KF4SQB is offline  
post #5 of 8 Old 12-10-2019, 12:24 AM Thread Starter
sAe23
Registered User
1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,378
Cruizer54
In my setup, the connector marked "To Heater-A/C controls" has something connected to it that goes off towards the passenger side inner fender.
When I get a chance, I will dig through all the bundled wires and stuff and see if I can find another connection.
Thanks for the help.
sAe23 is offline  
post #6 of 8 Old 12-10-2019, 12:29 AM Thread Starter
sAe23
Registered User
1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,378
Quote:
Originally Posted by KF4SQB View Post
I believe that is referring to the vacuum hose harness that plugs onto the back of the HVAC control panel in the dash. That is, ultimately, where the vacuum hose to the heater valve goes to.

So, the vacuum lines go in to the passenger cabin, then back out to the engine compartment?
And it's behind the HVAC panel?
Yeah, I'm not gonna mess with it LOL


The other end of the broken line is probably hidden beneath the wire loom (and other stuff).


Thanks
sAe23 is offline  
post #7 of 8 Old 12-10-2019, 06:34 PM
KF4SQB
Registered User
1994 XJ Cherokee 
 
Join Date: Nov 2009
Location: SouthWest Georgia
Posts: 711
Yes, thats correct. There is a vacuum supply line that goes through the firewall and under the dash, and connects to the back of the HVAC control. The control has a vacuum "switch" that routes vacuum to control the doors in the ducting that determine where the air comes out, and select fresh or recirculated air. There is also a line that goes back under the hood to control the valve for the heater core. The HVAC control is not hard to remove.

4-wheeling: because football, basketball, baseball, and golf only require one ball!


Confidence: The feeling you get just before you fully understand the situation!
KF4SQB is offline  
post #8 of 8 Old 12-14-2019, 10:44 PM Thread Starter
sAe23
Registered User
1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV
Posts: 3,378
So I found the other half of the broken hose... It was hiding under the bundled wires next to a piece of the vacuum hose that WAS visible...
Went to untangle it so I could DO something to plug it, and another piece broke off :/
I was able to melt the tip of the remaining hose and squish it shut with pliers...
Hopefully I stopped any leaks
cruiser54 likes this.
sAe23 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











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