air conditioning woes - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > air conditioning woes

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineToxic Brakes - 3000 PSI Braided Stainless Steel Brake LineCess Recovery Gear Snatch Tow Strap OffRoad @ ROCKRIDGE4WD

Reply
Unread 07-14-2012, 09:57 PM   #1
bluejunior
Registered User
2001 XJ Cherokee 
 
Join Date: Jan 2009
Location: Huntsville, Texas
Posts: 541
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?

__________________
Pain heals. Chicks dig scars. Glory lasts forever.
bluejunior is offline   Reply With Quote
Unread 07-14-2012, 10:45 PM   #2
CJ7-Tim
Real Jeeps have dents.
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 21,292
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.

.
vac-ball.jpg  
__________________
.

According to the National Shooting Sports Foundation, AR-15 sporting rifles account for nearly 20% of all U.S. firearms sales.

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 problem; Government is the problem.
CJ7-Tim is offline   Reply With Quote
Unread 07-14-2012, 10:48 PM   #3
Bbasso
Registered User
1999 XJ Cherokee 
 
Join Date: Jun 2012
Location: UpState, SC
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   Reply With Quote
Unread 07-14-2012, 11:00 PM   #4
ltrail
Registered User
1984 XJ Cherokee 
 
Join Date: Sep 2010
Location: mesa, AZ
Posts: 1,461
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   Reply With Quote
Unread 07-15-2012, 09:17 AM   #5
Saudade
Registered User
1988 XJ Cherokee 
 
Join Date: Jun 2008
Location: SoCal
Posts: 1,378
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   Reply With Quote
Unread 07-15-2012, 01:28 PM   #6
bluejunior
Registered User
2001 XJ Cherokee 
 
Join Date: Jan 2009
Location: Huntsville, Texas
Posts: 541
Thanks everybody! I'll check for a leak. My last cherokee it really was the unit, so I just assumed it was that again.
__________________
Pain heals. Chicks dig scars. Glory lasts forever.
bluejunior is offline   Reply With Quote
Unread 04-19-2013, 10:55 AM   #7
bluejunior
Registered User
2001 XJ Cherokee 
 
Join Date: Jan 2009
Location: Huntsville, Texas
Posts: 541
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.
__________________
Pain heals. Chicks dig scars. Glory lasts forever.
bluejunior is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.