Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

What is it?

Old 05-02-2012, 08:54 PM
  #1  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default What is it?

Ok guys, so the picture is attached. Its a small hose that comes out of the firewall, then connects to a larger hose. I'm thinking its the vacuum line for the AC/heat (which mine doesn't work, i only get defrost, no air out of the vents for AC or heat).

What is it and any ideas on fixing?

thanks in advance,
jon
Attached Thumbnails What is it?-photo-1.jpg  
Old 05-02-2012, 08:55 PM
  #2  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default

in case you can't tell, its split in two

sorry meant to mention that in the original post
Old 05-02-2012, 08:58 PM
  #3  
CF Veteran
 
TheJerm's Avatar
 
Join Date: Jun 2010
Location: Flint/Asheville
Posts: 2,501
Likes: 0
Received 4 Likes on 4 Posts
Year: 1995
Model: Cherokee
Engine: 4.0 HO
Default

That does indeed control your HVAC system hench why you only have defrost. Go to the parts store and find a rubber vacuum thingy that you can attach the two. Should have a rack of them somewhere in the store
Old 05-02-2012, 08:58 PM
  #4  
CF Veteran
 
Cherockee's Avatar
 
Join Date: Aug 2010
Location: Williamsport, Pa
Posts: 1,168
Likes: 0
Received 3 Likes on 3 Posts
Year: 1997
Model: Cherokee
Engine: 4.0L
Default

Yea, you need to fix that.
Old 05-02-2012, 09:00 PM
  #5  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default

yea, its getting hot here, the air would be nice.

just to clarify.....what is a "rubber vacuum thingy"? haha
Old 05-02-2012, 09:09 PM
  #6  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default

this stuff?

http://www.autozone.com/autozone/acc...questid=428097

how does it seal? you put both ends of the split hose into the connector and tape it? heat it up?
Old 05-03-2012, 06:42 AM
  #7  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default

any thoughts on how the vacuum tubing seals? do you just tape it in place?
Old 05-03-2012, 06:45 AM
  #8  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,855
Received 1,521 Likes on 1,234 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Just snip a little bit of the plastic piping off and take it to the parts store with you. Tell them you want some vacuum hose that will slip on the piping snugly. No tap, no glue. Just spit on each end of the hose and slide it over the piping.
Old 05-03-2012, 06:47 AM
  #9  
Junior Member
 
Lowrange2's Avatar
 
Join Date: May 2008
Location: +34° 25' 35.67", -81° 21' 12.04"
Posts: 15,016
Received 9 Likes on 7 Posts
Year: 1993
Engine: 4.0
Default

Brush your teeth first or your AC will smell like bad breath.

Last edited by Lowrange2; 05-03-2012 at 07:04 AM.
Old 05-03-2012, 06:56 AM
  #10  
Senior Member
 
letsgomuddin's Avatar
 
Join Date: Nov 2009
Location: Lowell, MI
Posts: 774
Received 7 Likes on 4 Posts
Year: 2001
Model: Cherokee (XJ)
Engine: 4.0
Default

get a piece of vacuum hose from a parts store, if its the right size, it just fits, no tape needed. Done this repair quite a few times.
Old 05-03-2012, 07:00 AM
  #11  
::CF Moderator::
 
cruiser54's Avatar
 
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,855
Received 1,521 Likes on 1,234 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by lowrange2
Brush your teeth first of your AC will smell like bad breath.
LOL. I fixed the sensor ground procedure for ya. Thanks for pointing that out. I usually used that for someone who was already knee-deep in circuit testing so it wasn' real thorough.
Old 05-03-2012, 08:00 AM
  #12  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default

fixed and done....i now have air, its not cold, but air is blowing out of the vents.
thanks guys
Old 05-03-2012, 04:10 PM
  #13  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default

fixed and I charged the system with refrigerant.

couple questions:

would the split hose cause whatever refrigerant was in there to be discharged?

would not having a cap on the port allow for refrigerant to leak?
Old 05-03-2012, 04:36 PM
  #14  
Member
 
944.0's Avatar
 
Join Date: Jan 2012
Location: Camdenton, Mo
Posts: 231
Likes: 0
Received 0 Likes on 0 Posts
Year: 94
Model: Cherokee
Engine: 4.0
Default

No to both. Your seals are probably dried up allowing a slow leak.
Old 05-03-2012, 04:40 PM
  #15  
Seasoned Member
Thread Starter
 
jon71203's Avatar
 
Join Date: Mar 2009
Posts: 269
Likes: 0
Received 1 Like on 1 Post
Model: Cherokee
Default

how would I go about replacing the seals?

which seals in particular?

Thread Tools
Search this Thread

All times are GMT -5. The time now is 05:39 AM.