AC not real cold - 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 > JK Wrangler Technical Forum > AC not real cold

Rough Country Deals at JeepHut.comSave at JeepHut on Smittybilt Soft topsUp to $75 Cash Back on Your ARB Fridge Freezer Purchase

Reply
Unread 07-16-2014, 08:44 AM   #1
mpd2434
Registered User
2014 JK Wrangler 
 
Join Date: May 2009
Location: NJ
Posts: 249
AC not real cold

My 2014 Unlimited's AC does not cool off to my satisfaction. I can get the temp in the vent down to 46 degrees. That sounds decent but my 4 other cars the temp in the vent gets down to 40, 39, 38 and 39 degrees. I know if I take it to the dealer their going to tell me that it's within their tolerances. Is there something I can do for this? A local mechanic checked it and said the system is charged properly.

mpd2434 is offline   Reply With Quote
Unread 07-16-2014, 09:21 AM   #2
JeepCares
Registered User
 
Join Date: Jan 2012
Location: MOPAR World Headquarters, Chrysler Group LLC
Posts: 2,456
It does sound like it is within specifications.
Why are you comparing the temperatures? Does it feel like it takes a long time to cool down the vehicle? Or doesn't it get cold enough? Do you have a soft top or a hard top?
__________________
Lee
U.S. Top Care
Chrysler Group LLC
JeepCares is offline   Reply With Quote
Unread 07-16-2014, 10:50 AM   #3
mpd2434
Registered User
2014 JK Wrangler 
 
Join Date: May 2009
Location: NJ
Posts: 249
I have a hard top on it right now. I have to run the fan on max the entire time with all the vents blowing toward me. This is annoying because of the noise and I haven't had anyone in the back seat yet so I don't know how uncomfortable it is back there. My 2004 Rubicon was so cold I ran that on the lowest setting. My 2013 Ram is also very cold. I had this problem with my 2004 Ram and after multiple trips to the dealer and local mechanics with no improvement I just suffered until I bought my new one.
mpd2434 is offline   Reply With Quote
Unread 07-16-2014, 11:07 AM   #4
rirrgang
Registered User
2007 JK Wrangler 
 
Join Date: Aug 2007
Location: San Jose, CA
Posts: 2,143
A: no insulation. the cold gets out like the heat gets in.
B: expect about a 20-30 degree diff between in and outside.
__________________
-Rick
07 Sahara Unlimited
rirrgang is offline   Reply With Quote
Unread 07-16-2014, 12:21 PM   #5
crzyamerican
Registered User
2013 JK Wrangler 
 
Join Date: Jun 2013
Location: Fort Walton beach, FL
Posts: 1
My 2011 was much colder at the vents then my 2013.
crzyamerican is offline   Reply With Quote
Unread 07-16-2014, 01:10 PM   #6
mpd2434
Registered User
2014 JK Wrangler 
 
Join Date: May 2009
Location: NJ
Posts: 249
I was thinking of getting the insulation panels for it. I understand about the 20 degree difference from inside to outside but why do all of my other cars drop the temp. more? They were all measured on the same day.
mpd2434 is offline   Reply With Quote
Unread 07-16-2014, 02:42 PM   #7
rubicon17
Registered User
2012 JK Wrangler 
 
Join Date: Nov 2011
Location: , WY
Posts: 1,094
Mine gets 38-44 at the vent. My xj blows ice its 36f and i got it to 34.5 spraying water at the condenser lol. What is the ambient temp when you see 46 at the vents? Also if its real humid its less efficent, you could always recover a little out of the system so it doesnt even get 50 and take it in, they will recharge it. Could be over or under chanrged enough from the factory. A little makes a big difference when your only dealing with a pound or so. Also try 3/4 instead of full fan speed that will help and make sure its on recirculating air. I to noticed mine was not like my tj but its been 100+ out the last 2 weeks and blows nice and cool.
__________________
Selling: tj rubicon locker, tatton drive shaft,xseries bushings
rubicon17 is online now   Reply With Quote
Unread 07-16-2014, 04:15 PM   #8
ronjenx
Web Wheeler
 
ronjenx's Avatar
2008 JK Wrangler 
 
Join Date: Jan 2009
Location: Maine
Posts: 3,847
To test the A/C performance, operate the A/C system under the following conditions.

Engine at idle and operating temperature
Doors or windows open
Transmission in Park or Neutral with parking brake set
A/C heater controls set to Recirculation mode (max-A/C), full cool, panel mode, high blower and with A/C compressor engaged.


Here are the A/C output temperature ranges at various ambient temps.
The ambient readings at the left are the "feels like" temps which factor in the relative humidity.

Ambient Temp..... Temp at Center Outlets

70 F........................42 - 59 F
80 F........................45 - 64 F
90 F........................48 - 69 F
100 F......................52 - 72 F
110 F......................56 - 75 F


Some people have added a resistor in the evaporator temp sensor circuit to lower their A/C output temps.
You have to be careful not to go so low as to let the evaporator freeze up.
__________________
2008 JKU Rubicon
42RLE Auto
ronjenx is offline   Reply With Quote
Unread 07-16-2014, 05:44 PM   #9
mpd2434
Registered User
2014 JK Wrangler 
 
Join Date: May 2009
Location: NJ
Posts: 249
Wow, that's a big range. according to that i'm actually on the low end of the temp. range with my jeep. I'll have to look into the resistor thing. I'm also going to look into the roof panel insulation.
mpd2434 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.