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.

AC only blows out defroster?

Thread Tools
 
Search this Thread
 
Old 07-03-2012, 03:42 AM
  #1  
Newbie
Thread Starter
 
91NMXJ's Avatar
 
Join Date: Feb 2011
Location: New Mexico
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0
Default AC only blows out defroster?

Ok everyone need some help here.... I live in hot as h+*ll NM. My AC works well blows cold as long as im not on the gas... What I mean is if I step on the gas to go the AC stops blowing out the vents and starts blowing out the defroster? Any ideas how to fix this? Thanks for your help...
Old 07-03-2012, 06:25 AM
  #2  
Member
 
RenixHeep's Avatar
 
Join Date: Jan 2011
Location: Modesto, CA
Posts: 113
Likes: 0
Received 0 Likes on 0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

I'm curious aswell, mine does this too. I suspect its tubing or something unhooked or cracked off, but I have no real idea. I'm probly going to just convert it to OBA because of it haha
Old 07-03-2012, 09:33 AM
  #3  
CF Veteran
 
RTorrez1's Avatar
 
Join Date: Sep 2011
Location: Riviera, Texas
Posts: 4,172
Likes: 0
Received 4 Likes on 4 Posts
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Default

You have a vacuum leak somewhere in the system. I am betting if you have cruse control that isn't working either. When you have a vac leak your ac will blow through the defroster vent. You are going to have to trace all you vac lines. the best place to start is at the vac ball behind the front bumper passenger side. Make sure you have no cracks in the vac ball too.
Old 07-03-2012, 09:50 AM
  #4  
Newbie
Thread Starter
 
91NMXJ's Avatar
 
Join Date: Feb 2011
Location: New Mexico
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0
Default

What is OBA and how hard is it to convert?
Old 07-03-2012, 09:52 AM
  #5  
Newbie
Thread Starter
 
91NMXJ's Avatar
 
Join Date: Feb 2011
Location: New Mexico
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0
Default

Oh ans as for the Cruse control. I have it but if it works I do not know. The guy I got my Jeep from cut the wires at the switch... I dont know why and I have yet to fix ( connect) them
Old 07-03-2012, 11:23 AM
  #6  
Member
 
RenixHeep's Avatar
 
Join Date: Jan 2011
Location: Modesto, CA
Posts: 113
Likes: 0
Received 0 Likes on 0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0
Default

Originally Posted by RTorrez1
You have a vacuum leak somewhere in the system. I am betting if you have cruse control that isn't working either. When you have a vac leak your ac will blow through the defroster vent. You are going to have to trace all you vac lines. the best place to start is at the vac ball behind the front bumper passenger side. Make sure you have no cracks in the vac ball too.
No cruise here, but that's interesting! thanks for the tip man, ill have to check it out soon. Oh and OBA is on board air, costs around 200~300, with a few ways of how to set it up. Grease packed compressor like the lowrider guys like to do, or in line oiled like a few guys I've seen on various xj forums do. The compressors we have flow around 10-11 cfm iirc, which is pretty dang nice, imo.
Old 07-03-2012, 03:50 PM
  #7  
CF Veteran
 
RTorrez1's Avatar
 
Join Date: Sep 2011
Location: Riviera, Texas
Posts: 4,172
Likes: 0
Received 4 Likes on 4 Posts
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Default

Originally Posted by RenixHeep
No cruise here, but that's interesting! thanks for the tip man, ill have to check it out soon.
Not a problem. Let me know if you find you leak.
Good luck.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jmsummers2012
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
53
04-30-2021 02:35 PM
LittleRed94
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
10-06-2015 08:09 PM
xjcherokee2000
Modified XJ Cherokee Tech
4
09-29-2015 08:28 PM
BNJeepsta
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
09-18-2015 06:04 AM
shotseven
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
09-06-2015 03:06 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: AC only blows out defroster?



All times are GMT -5. The time now is 10:17 PM.