air conditioning woes - JeepForum.com

 
LinkBack Thread Tools
post #1 of 7 Old 07-14-2012, 09:57 PM Thread Starter
bluejunior
Hold my beer
 
bluejunior's Avatar
2001 XJ Cherokee 
 
Join Date: Jan 2009
Location: Dallas
Posts: 4,781
air conditioning woes

So I live in Texas, I love my AC, and until recently it has loved me.

The unit back in the dash that directs air to all the different vents is having issues, I can't use the recirc or hi and low air condition settings anymore, because it all just blows straight out of the windshield vent, which of course drags it through the sunlight and kills the cold factor quite a bit.

Point being, I need to replace that part of the ducting and I'm wondering if anyone has had to do this and how much of a pain I'm getting into. I'm a college student in an apartment so I can only really do projects that don't require a HUGE amount of time or more than general tools, so it's nice to know what to expect.

Also anyone had particular success/misery with specific brands of OEM replacements in the AC system?


Lifted, Locked, Stiffened
Build
bluejunior is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 07-14-2012, 10:45 PM
CJ7-Tim
Real Jeeps have dents
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 24,868
Wondering why you need to replace any of the ducting ?

Quote:
Originally Posted by bluejunior View Post
.....it all just blows straight out of the windshield
Start by making sure you have no vacuum leaks, the flapper valve that directs the air runs on engine vacuum. Inspect the vacuum ball behind the front bumper and all the hoses and rubber fittings.

.
Attached Thumbnails
Vac Ball.jpg  

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
post #3 of 7 Old 07-14-2012, 10:48 PM
Bbasso
Registered User
1999 XJ Cherokee 
 
Join Date: Jun 2012
Location: UpState
Posts: 154
Sounds like you have a vacuum leak...
listen for a hiss on the passenger side fender under the hood.
I tracked mine down to a leak that is behind the front bumper.
Bbasso is offline  
post #4 of 7 Old 07-14-2012, 11:00 PM
ltrail
Registered User
1984 XJ Cherokee 
 
Join Date: Sep 2010
Location: mesa
Posts: 1,458
Sounds like they have you covered here. Try not to tear the whole thing apart to find a leak .

84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
what size sawzall blades does it take to fit 40's?
ltrail is offline  
post #5 of 7 Old 07-15-2012, 09:17 AM
Saudade
Registered User
1988 XJ Cherokee 
 
Join Date: Jun 2008
Location: SoCal
Posts: 1,396
Yep! You are welcome to point your favorite search engine at "Cherokee defrost only" and browse through the gazillion threads on this.
Saudade is offline  
post #6 of 7 Old 07-15-2012, 01:28 PM Thread Starter
bluejunior
Hold my beer
 
bluejunior's Avatar
2001 XJ Cherokee 
 
Join Date: Jan 2009
Location: Dallas
Posts: 4,781
Thanks everybody! I'll check for a leak. My last cherokee it really was the unit, so I just assumed it was that again.

Lifted, Locked, Stiffened
Build
bluejunior is offline  
post #7 of 7 Old 04-19-2013, 10:55 AM Thread Starter
bluejunior
Hold my beer
 
bluejunior's Avatar
2001 XJ Cherokee 
 
Join Date: Jan 2009
Location: Dallas
Posts: 4,781
UPDATE: I forgot to ever come back and tell everyone the cause of the problem. It actually turned out to be a cracked plug for the Brake booster was the source of my leak. It's at the back driver's side of the engine bay, and apparently a common failure point. Anyone having a minor vacuum-leak related issue might want to check it. Replacing it also fixed a high-pitched whine that varied with engine speed that I had barely noticed until it was gone.

Lifted, Locked, Stiffened
Build
bluejunior 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



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
air conditioning supersal01 XJ Cherokee Technical Forum 2 06-09-2011 04:50 PM
air conditioning???? jwrangler91 XJ Cherokee Technical Forum 8 07-21-2010 10:40 AM
Air Conditioning tecumsa XJ Cherokee Technical Forum 10 07-05-2008 12:34 PM
More air conditioning help Beater XJ Cherokee Technical Forum 3 08-06-2007 10:37 AM
Air conditioning nujeepguy XJ Cherokee Technical Forum 5 06-21-2007 03:48 PM

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