Ac clutch relay keeps blowing - JeepForum.com
 
LinkBack Thread Tools
post #1 of 6 Old 03-28-2020, 03:11 PM Thread Starter
BogoMIPS
Registered User
 
BogoMIPS's Avatar
2003 KJ Liberty 
 
Join Date: Sep 2014
Location: Thomson
Posts: 11
Ac clutch relay keeps blowing

03 Liberty
4WD
V6

My ac clutch stopped working so I replaced the relay.
I ordered one with the exact name and p/n.
A month later it failed again.
It sat for a few months before the ac issue.
What could be making the relay fail after a few weeks?
The clutch?
The compressor?
Something else?

BogoMIPS is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 03-28-2020, 04:04 PM
jtec
Web Wheeler
 
jtec's Avatar
2014 JK Wrangler 
 
Join Date: Oct 2017
Posts: 8,006
Could the AC be over cycling, the clutch drawing to many amps?

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
jtec is offline  
post #3 of 6 Old 03-28-2020, 04:50 PM Thread Starter
BogoMIPS
Registered User
 
BogoMIPS's Avatar
2003 KJ Liberty 
 
Join Date: Sep 2014
Location: Thomson
Posts: 11
Quote:
Originally Posted by jtec View Post
Could the AC be over cycling, the clutch drawing to many amps?
I will look at my service manual and check how many amps it's pulling. It did seem to be cycling on and off a lot. Thank you and will keep you updated
BogoMIPS is offline  
 
post #4 of 6 Old 03-28-2020, 06:13 PM
jtec
Web Wheeler
 
jtec's Avatar
2014 JK Wrangler 
 
Join Date: Oct 2017
Posts: 8,006
The compressor clutch coil is acceptable if the
current draw measured at the clutch coil is 2.0 to 3.9
amperes with the electrical system voltage at 11.5 to
12.5 volts. This should only be checked with the work
area temperature at 21 C (70 F). If system voltage
is more than 12.5 volts, add electrical loads by turning on electrical accessories until the system voltage
drops below 12.5 volts.
(a) If the clutch coil current reading is four
amperes or more, the coil is shorted and should be
replaced.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
jtec is offline  
post #5 of 6 Old 03-28-2020, 09:17 PM Thread Starter
BogoMIPS
Registered User
 
BogoMIPS's Avatar
2003 KJ Liberty 
 
Join Date: Sep 2014
Location: Thomson
Posts: 11
Quote:
Originally Posted by jtec View Post
The compressor clutch coil is acceptable if the
current draw measured at the clutch coil is 2.0 to 3.9
amperes with the electrical system voltage at 11.5 to
12.5 volts. This should only be checked with the work
area temperature at 21 C (70 F). If system voltage
is more than 12.5 volts, add electrical loads by turning on electrical accessories until the system voltage
drops below 12.5 volts.
(a) If the clutch coil current reading is four
amperes or more, the coil is shorted and should be
replaced.
Thanks for that info.
Tonight omw to work I set the ac to recirculate, and it was blowing cold air for about 10 minutes. I did notice that the clutch was still cycling on and off. Approx 5 second intervals. I won't have time till Monday to put the meter on it.
BogoMIPS is offline  
post #6 of 6 Old 03-29-2020, 02:13 AM
jtec
Web Wheeler
 
jtec's Avatar
2014 JK Wrangler 
 
Join Date: Oct 2017
Posts: 8,006
fast cycling - Low on refrigerant (suva) ? I am thinking of an easy way to confirm refrigerant charge, only thing I think is remove and weigh - not an easy DIY test.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
jtec 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











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



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