A/C compressor clutch - TCCoA Forums
 
LinkBack Thread Tools
post #1 of 5 (permalink) Old 04-08-2019, 09:04 PM Thread Starter
3rd Gear Poster
 
30thAnniversaryCat's Avatar
 
Join Date: Jun 2009
Location: Austin, Texas
Posts: 170
A/C compressor clutch

My a/c is blowing only warm air. The compressor clutch is not engaging, but the low side pressure gauge says the pressure is normal with the a/c set on max a/c and fan on high. I know that the pressure sensor switch will not let the clutch engage if the pressure is too low, but Iím afraid to add r134 with the gauge showing the system is adequately filled. Any advice is welcome.
30thAnniversaryCat is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 04-08-2019, 09:32 PM
Seasoned PostWhore
 
theterminator93's Avatar
 
Join Date: Jan 2009
Location: North Ridgeville, Ohio
Age: 31
Posts: 8,995
Garage
Disconnect the connector from the low side cycling switch on the accumulator and jump it closed momentarily. Does the clutch engage?

-Brandon
97 Laser Red Thunderbird LX 159k, Stage 2 4.6L 2v N/A | 300 BHP (255 RWHP, 290 RWTQ) | 13.95 @ 97.58 | Build details | Pics at the Lorain Assembly plant
98 Black Mark VIII 150k, stock daily driver
07 Redfire Fusion V6 SEL 176k, for the wife
Gone but not forgotten: 96 Mark VIII, 94 Cougar XR7, 93 Mark VIII

TCCoA's resident pilot since 2014
Once you have tasted flight, you will walk the world with your eyes turned skyward, for there you have been and there you long to return. -Leonardo da Vinci
theterminator93 is offline  
post #3 of 5 (permalink) Old 04-09-2019, 08:43 AM Thread Starter
3rd Gear Poster
 
30thAnniversaryCat's Avatar
 
Join Date: Jun 2009
Location: Austin, Texas
Posts: 170
Do I jump across the connector or the accumulator side?

Last edited by 30thAnniversaryCat; 04-09-2019 at 09:43 AM.
30thAnniversaryCat is offline  
Sponsored Links
Advertisement
 
post #4 of 5 (permalink) Old 04-09-2019, 08:05 PM
Seasoned PostWhore
 
theterminator93's Avatar
 
Join Date: Jan 2009
Location: North Ridgeville, Ohio
Age: 31
Posts: 8,995
Garage
Jump the connector (with AC on, obviously).

If it works, there may be a problem with the cycling switch. If you remove the switch (don't worry, there's a valve under it so you shouldn't lose refrigerant when removing it) and hook it up to compressed air, it should close when more than ~40-45 PSI is applied. If you don't hear it click and there's no continuity between the two contacts under pressure, the switch is faulty and needs to be replaced.

-Brandon
97 Laser Red Thunderbird LX 159k, Stage 2 4.6L 2v N/A | 300 BHP (255 RWHP, 290 RWTQ) | 13.95 @ 97.58 | Build details | Pics at the Lorain Assembly plant
98 Black Mark VIII 150k, stock daily driver
07 Redfire Fusion V6 SEL 176k, for the wife
Gone but not forgotten: 96 Mark VIII, 94 Cougar XR7, 93 Mark VIII

TCCoA's resident pilot since 2014
Once you have tasted flight, you will walk the world with your eyes turned skyward, for there you have been and there you long to return. -Leonardo da Vinci

Last edited by theterminator93; 04-09-2019 at 08:16 PM.
theterminator93 is offline  
post #5 of 5 (permalink) Old 04-15-2019, 11:35 PM Thread Starter
3rd Gear Poster
 
30thAnniversaryCat's Avatar
 
Join Date: Jun 2009
Location: Austin, Texas
Posts: 170
Took it to mechanic, who put the gauges on both sides. It was so low on refrigerant, that the low side cycling switch was disabling the clutch. He put vacuum on it, recharged, and, voila, weíre back in business. Clearly, thereís a leak, but thatís for later.
30thAnniversaryCat is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums 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 email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
danmanmeatman
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
A/C Compressor Clutch?? Pearl97LXSPORT Exterior 5 09-17-2008 05:30 PM
Symptoms of Compressor Going Bad? Bradley Blaze General Tech 0 08-12-2002 06:07 PM
March pulles..no compressor =no install MZ-Bird Engine - 4.6L & 5.4L 2 08-08-2002 10:07 AM
A/C Compressor Question... IronChopz General Tech 3 08-02-2002 11:32 PM

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

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