Heat and aftermarket AC quit working - 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 Wrangler Forums > YJ Wrangler Technical Forum > Heat and aftermarket AC quit working

TJ 5.25" Speaker Adapters - NalinMFGSmittybilt Products at Oconee Off-Road!Alloy USA Still Available

Reply
Unread 11-08-2013, 04:45 AM   #1
crh878
Registered User
1995 YJ Wrangler 
 
Join Date: Dec 2012
Location: Austin, TX
Posts: 2
Heat and aftermarket AC quit working

Up until a couple weeks ago heat would continually come out of the windshield vents even when it was turned off. I could turn the temperature down and put it on low and it didn't bother me. I could change the setting to floor or vent and it would switch. The system was just constantly running even when it was turned off. Now nothing comes on including my bold-on AC.

A couple days ago it started working ago but wouldn't turn off full blast and the temperature wouldn't turn down and it quit working soon after. The AC still wouldn't work though.

I would assume it was the heater control that's bad but the AC not working either is throwing me off.

crh878 is offline   Reply With Quote
Unread 11-08-2013, 12:01 PM   #2
superj
Registered User
1987 YJ Wrangler 
 
Join Date: Mar 2008
Location: corpus christi, texas
Posts: 6,419
its vacuum controlled. look at the thin vacuum line running into the firewall by the intake. the ac is probably a ground. the ac in your jeep is super easy to take apart and work on, i have had mine out a few times for cleaning and doing minor things (like fixing when i put a screw through one of hte tubes)
__________________
Slow ride, take it easy
superj is offline   Reply With Quote
Unread 11-08-2013, 11:23 PM   #3
timatoe
Registered User
1990 YJ Wrangler 
 
Join Date: Aug 2006
Location: Grass Valley California
Posts: 13,671
I could only assume it's a switching issue, because the heat and ac systems are completely separate from one another.
__________________
Quote:
Originally Posted by George Orwell
We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm.
timatoe is offline   Reply With Quote
Unread 11-09-2013, 06:50 AM   #4
superj
Registered User
1987 YJ Wrangler 
 
Join Date: Mar 2008
Location: corpus christi, texas
Posts: 6,419
And the ground for the ac system could have come off. Its one thin black wire that hooks above your left knee
__________________
Slow ride, take it easy
superj is offline   Reply With Quote
Unread 11-09-2013, 05:27 PM   #5
pasinbuy
Registered User
1994 YJ Wrangler 
 
Join Date: Feb 2007
Location: florida
Posts: 3,839
Your AC and heat are two completely different systems. Find the problem with one then the other. First place to look is fuses. There are no vacuum controls that I can think of only cables. Should be pretty easy to trace.
pasinbuy is offline   Reply With Quote




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.