Climate control/defroster vent issue
#1
Newbie
Thread Starter
Join Date: Aug 2009
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Climate control/defroster vent issue
Just bought myself a 96 cherokee classic, my problem is that the a/c only blows through the defroster vents, i searched the forum and saw alot of people discuss the vacuum lines and vacuum reservoir failing and causing it. I checked all the underhood lines and even went as far as constructing a makeshift reservoir to see if it would work. it still doesnt. im wondering has anyone here had it be the climate control switch itself? or is it possible that my vacuum leak is hiding somewhere behind the dashboard?
thanks for any help you can give.
Tom
thanks for any help you can give.
Tom
#3
Newbie
Thread Starter
Join Date: Aug 2009
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
It has vacuum at the T fitting at the firewall. I just wanted to see if there is anything i should prepare for before taking the dash apart, seems like a lot of work to get to it.
#4
CF Veteran
Join Date: Jul 2009
Location: Chico,ca
Posts: 2,158
Likes: 0
Received 10 Likes
on
9 Posts
Year: 89
Model: Cherokee
Engine: 4.0
it is actually easy to get to the back of the climate control switch,after you get the instrument bezel cover off it will exspose the climate control. It takes about 30 minutes for someone who has never done it,I would say it is either your vacuum switch,a line has come off or broke,or your vacuum motor is bad. sometimes you can here it leaking if you move the controls around from off to on and listen.
#5
CF Veteran
Join Date: Apr 2009
Posts: 4,734
Likes: 0
Received 9 Likes
on
9 Posts
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
I have much the same problem on my '92. The A/C will blow thru defrost vents when climbing slight hills and the engine vaccum drops. It is getting worse.
I have only casually looked at the hoses. I will do a more in depth troubleshoot when I have the time. I'm not driving the Cherokee very much right now.
If you find out where your problem is, let us know.
I have only casually looked at the hoses. I will do a more in depth troubleshoot when I have the time. I'm not driving the Cherokee very much right now.
If you find out where your problem is, let us know.
#7
CF Veteran
Join Date: Jul 2009
Location: Chico,ca
Posts: 2,158
Likes: 0
Received 10 Likes
on
9 Posts
Year: 89
Model: Cherokee
Engine: 4.0
It does take some finess or just unbolt the colum a bit and let it drop down,it only takes two 14mm or 15mm nuts that hold it in,that is what I found to be the easiest. Mines is trained it has been out so many times,yours being a virgin i guess might take a bit. I actually broke mine the first time,but I had another one to put in,that is how I learned my lesson.
Last edited by Abovetimberline; 08-17-2009 at 09:32 PM.
Trending Topics
#10
Newbie
Thread Starter
Join Date: Aug 2009
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Victory!! Thanks for the suggestion ktm! The plastic fitting in the vacuum line right at the manifold (check valve?) that says "vacuum" on it was all clogged up so it wasnt getting enough vacuum to the unit. nothing like air conditioning on these 90' days.
#11
Junior Member
Join Date: May 2009
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1995
Model: Cherokee
Engine: 4.0L HO
it is actually easy to get to the back of the climate control switch,after you get the instrument bezel cover off it will exspose the climate control. It takes about 30 minutes for someone who has never done it,I would say it is either your vacuum switch,a line has come off or broke,or your vacuum motor is bad. sometimes you can here it leaking if you move the controls around from off to on and listen.
#12
bet you are glad you didnt tear your dash apart lol.
Thread
Thread Starter
Forum
Replies
Last Post
xjwolfman
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
08-26-2020 12:59 PM
shelby5041
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
39
11-07-2015 01:22 AM
Blackxj51
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
13
09-09-2015 04:25 PM
pet1
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
3
09-09-2015 11:39 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)