A/C Compressor Clutch - Off-Road Forums & Discussion Groups
Ford 67-96 F-Series, 78-96 Bronco All discussions of 67-96 F-Series Trucks and 78-96 Broncos

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 11-07-2005, 05:39 PM
Posts: n/a
A/C Compressor Clutch

Anyone have any trouble shooting tips for the A/C compressor clutch on a 91 Bronco? 5.8L engine. It does not engage when I turn on the A/C. I want to explore all options before I go and replace the darn thing. THX
Sponsored Links
post #2 of (permalink) Old 11-07-2005, 07:10 PM
Join Date: May 2004
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
Re: A/C Compressor Clutch

First make sure you have enough freon in the system. Use a gauge designed for it. I changed my 1990 Bronco over to R-134A with a flush and retrofit kit. Haven't had problems since. Next with the truck running and the A/C turned on check to see if you have voltage going to the high pressure switch. You should be able to jumper the wires for the high pressure switch and see if you have voltage going to the A/C clutch. Usually it turns out being low on freon so make sure you check that first.
FoundOnResDead is offline  
post #3 of (permalink) Old 11-14-2005, 11:35 AM
Join Date: Mar 2002
Posts: 117
Thanks: 0
Thanked 0 Times in 0 Posts
Re: A/C Compressor Clutch

I don't see what low freon has got to do with the clutch engaging or not. Does the clutch "snap" towards the compressor when you turn on the AC? If no, it may not get power. If yes, does it turn the compressor or not? If not, the clutch may be worn out. I had the same problem with my '96 Bronco.
esm is offline  
Sponsored Links
post #4 of (permalink) Old 11-14-2005, 08:47 PM
Join Date: Apr 2001
Location: eustis , Florida
Posts: 1,444
Thanks: 0
Thanked 0 Times in 0 Posts
Re: A/C Compressor Clutch

the compressor cycling switch on the reciever/drier will stop the clutch from engaging if theres not enough pressure /freon to avoid burning up the compressor. Pull the connector off and jump it with a paper clip if the clutch engages its low on freon, if not check for voltage at the clutch harness while jumping, if it has 12 volts, yes the clutch is toast...
BRONCOMANIA is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome