Re: Ac... - Saab 900 Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
7/1: Members: Log In to See Fewer Ads! |
5/28: SAAB Evolutions/TSN T-Shirts $14
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
I assume before charging you pulled a vacuum on the system to get rid of air and moisture. Also, when AC compressors fail they frequently send debris (metal shards) into the system. You would need to flush out your AC system and replace the drier to get rid of that stuff.
Sounds like the basic problem is electrical. One suspect would be the temperature sensor in the upper coolant hose (you can just jumper across this). Another would be the diode inline with the AC clutch wire if you have a model where the compressor is controlled by the engine computer. It's also possible the low-pressure cutoff switch is bad.
You didn't say what year and model C900 you're working with. As mentioned, on many of them the engine computer also controls the compressor and that can be another source of problems if an internal component fails.
If you are absolutely sure that you have no debris and that there is sufficient oil and refrigerant in the system you can try hot-wiring the compressor AC clutch directly to see if the system otherwise works. However the compressor can be damaged if there is not enough oil circulating or there are metal bits left from the bad compressor, so that approach needs to be used with care.
->Posting last edited on Thu, 16 Jun 2016 10:00:11.
Posts in this Thread:
- Ac..., stephen mitchem, Wed, 15 Jun 2016 18:16:06
- Re: Ac..., JerseySaab
, Wed, 15 Jun 2016 18:26:51- Re: Ac..., stephen mitchem, Wed, 15 Jun 2016 18:48:20
- Re: Ac..., JerseySaab
, Wed, 15 Jun 2016 20:00:56- Re: Ac..., stephen mitchem, Wed, 15 Jun 2016 20:09:26
- Re: Ac..., cgwiz
, Thu, 16 Jun 2016 09:26:29 - Re: Ac..., JerseySaab
, Wed, 15 Jun 2016 20:44:52- Re: Ac..., stephen mitchem, Thu, 16 Jun 2016 09:43:56
- Re: Ac..., JerseySaab
, Thu, 16 Jun 2016 09:59:07 <-- Viewing This Message- Re: Ac..., stephen mitchem, Thu, 16 Jun 2016 20:00:24
- Re: Ac..., JerseySaab
, Fri, 17 Jun 2016 05:39:15- Re: Ac..., cgwiz
, Fri, 17 Jun 2016 09:15:27- Re: Ac..., JerseySaab
, Fri, 17 Jun 2016 09:42:35- Re: Ac..., stephen mitchem, Sun, 19 Jun 2016 20:36:24
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
![](/tsn/xyz/stateofninebutton.gif) |
SaabClub.com
![](/tsn/xyz/scnabutton.gif) |
Jak Stoll Performance
![](/tsn/xyz/jakstollbutton.gif) |
M Car Covers
![](/tsn/xyz/mcarcoversbutton.gif) |
Ad Available
![](/tsn/xyz/buttonavailable.gif) |
![](/tsn/images/tsnmap.gif)
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!