Go Back   AudiWorld Forums > Audi Models > Other Audi > Audi 90 / 80 / Coupe quattro / Cabriolet Discussion
Sign in using an external account
Register Forgot Password?


Welcome to AudiWorld Forums!
Welcome to AudiWorld.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the AudiWorld Forums community today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 03-29-2014, 08:41 PM   #1
AudiWorld Newcomer
Account #: 266611
 
Join Date: Sep 2013
Posts: 6
Default Aircon intermittent

Hi Guys,...

My air con compressor will come on every once in a while, then cut out. So I know it works, but what could be causing this?

Thanks
Tyson2busy is offline   Reply With Quote
Old 03-30-2014, 11:24 AM   #2
Audiworld Junior Member
Account #: 263412
 
Join Date: Jul 2013
Posts: 85
Default

Quote:
Originally Posted by Tyson2busy View Post
Hi Guys,...

My air con compressor will come on every once in a while, then cut out. So I know it works, but what could be causing this?

Thanks
Don't know what year model Audi..90..Cabriolet..but they work pretty much the same.

Could be low on refrigerant..compressor comes on and the low side pressures drop below the threshold of the low pressure switch..then the compressor kicks off..low side pressure comes back up..compressor come back on line and engages.

An over charged system will do it too. High side pressure switch kicks the compressor out when the high side pressures go up.

Some A/C gauges and an low side adapter (yellow jacket #19153 ACME FEMx13mm) on the compressor port will tell the story.
Rusty Spokes is online now   Reply With Quote
Old 03-31-2014, 02:55 PM   #3
AudiWorld Newcomer
Account #: 266611
 
Join Date: Sep 2013
Posts: 6
Default

Interesting! Wow,..talk about a complicated system!

Thanks!
Tyson2busy is offline   Reply With Quote
Old 04-01-2014, 02:35 PM   #4
AudiWorld Member
Account #: 122825
 
Join Date: Mar 2007
Location: Charlotte, NC
Posts: 513
Default

There is also a thermal switch that will shut off the compressor if ambient temperature is too cold. If you are in the north country, it may still be too cold.
hubturn is offline   Reply With Quote
Old 04-02-2014, 06:10 PM   #5
x19
AudiWorld Member
Account #: 213330
 
Join Date: May 2011
Posts: 163
Default

What kind of refrigerant is in system R-12 or R134a?
In either way, lower refrigerant in system is doing this and check the leakage in system if you can
or let professional tech do the evacuate and recharge system with right freon gas includes leakage test. x19
x19 is offline   Reply With Quote
Old 04-05-2014, 04:27 AM   #6
AudiWorld Super User
Account #: 30890
 
Join Date: Jan 2002
Location: E.Idaho
Posts: 4,480
Default

Sounds low, I had the same issue.

You should run the AC in the winter once in awhile to leg the PEG oil keep the seals lubed, helps to cut down on leakage.

Evac and recharge fixed the issue.
__________________
egp320i is offline   Reply With Quote
Old 04-05-2014, 04:27 AM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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



All times are GMT -8. The time now is 10:53 AM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community