A/C Fuse Popping - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-07-2012, 06:03 PM   #1
Jeeper
 
Join Date: Dec 2010
Location: Austin, TX
Posts: 71
Question A/C Fuse Popping

I've a '99 with the 2.5L 4 banger. The fan blows just fine (after replacing the heater-a/c control panel). I can turn on the a/c and it blows good and cold for at least 15 minutes when I'm sitting at idle in the driveway (I turned it off after that). However, if I start driving around, fuse #7 (misleadingly labeled "back up lp ABS", and rated for 10 amps) goes out in about 5 minutes, and the air stops blowing cold (though the fan keeps going). From what I understand, that's the circuit that runs to the a/c compressor relay to tell it to send juice to the compressor.

Where should I start the troubleshooting process? Something to note is that the a/c compressor is getting REALLY hot during operation. I'm not sure if that's normal.

Thanks for your help.

scottunzicker is offline   Quote Quick Reply
Old 05-07-2012, 07:04 PM   #2
Jeeper
 
Join Date: Sep 2011
Location: Delaware
Posts: 178
Sounds to me that your compressor clutch is bad. When it the clutch (big electro-magnet) starts to go, it slips..draws a higher current..and creates heat!

Hammond_Egger is offline   Quote Quick Reply
Old 05-07-2012, 09:51 PM   #3
Jeeper
 
Join Date: Dec 2010
Location: Austin, TX
Posts: 71
Hammond_Egger - Thanks for the reply. I hadn't even thought of the clutch going out. It's not making any kind of noise or anything, but boy that compressor is getting hot.

Just out of curiosity, could low "freon" cause a hot compressor?

Thanks again!
scottunzicker is offline   Quote Quick Reply
Old 05-07-2012, 10:34 PM   #4
Jeeper
 
div4gold's Avatar
 
Join Date: Feb 2012
Location: WA
Posts: 506
Quote:
Originally Posted by scottunzicker View Post
Hammond_Egger - Thanks for the reply. I hadn't even thought of the clutch going out. It's not making any kind of noise or anything, but boy that compressor is getting hot.

Just out of curiosity, could low "freon" cause a hot compressor?

Thanks again!
Of course they don't use Freon anymore the refrigerant is R134. Low refrigerant could cause the compressor to kick in and out more frequently and run longer, their could also be a lack of lubrication due to the low refrigerant . You can get a can of refrigerant with lubrication and a pressure gauge on it for around $30.
__________________
2006 TJ Unlimited, stock.
div4gold is offline   Quote Quick Reply
Old 05-07-2012, 10:40 PM   #5
Jeeper
 
RUBI 4 MY MRS's Avatar
 
Join Date: Feb 2011
Location: California/Nevada
Posts: 1,265
That fuse has a few circuits on it. It only feeds the coil in the A/C relay not the compressor so the short or overload is not the compressor. On that fuse you also have two things that your jeep may or may not have. They are the ABS relay, the ABS controller (ABS only), & the rear window defogger relay (hardtop only). Then you have the back up lights. That is where the short most likely is. Try putting a new fuse in & with the key on but not the A/C, check the fuse. If good put it in reverse & see if the BU lights come on. If not, check the fuse. If it is blown then there is a short in the BU circuit from the back up switch in the trans back to the tail lights.
__________________


'05 Rubi TJ Unlimited
'93 Toyota 4Runner
RUBI 4 MY MRS is offline   Quote Quick Reply
Reply

Tags
a/c , a/c compressor , fuses

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

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.



Thread Tools

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 Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 01:19 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC