Saab Tech Talk (STT)

Workshop for classic Saab models => Classic Saab 9-5 (MY 1998-2010) => Topic started by: jmblack on 11 August 2011, 11:42:58 AM

Title: Air Con Not Working
Post by: jmblack on 11 August 2011, 11:42:58 AM
Air Con on 56 plate 95 Estate stopped working. Had it regassed, but will not start - suspect a leak somewhere.

Any advice on most likely leak points and/or other obvious faults before I start expensive process 0f investigations?

Thanks!
Title: Re: Air Con Not Working
Post by: GeoffW on 11 August 2011, 12:30:19 PM
Firstly, run the ACC calibration test described in the owners handbook to see what fault codes are displayed. Search this forum for further details, it's come up before.
Title: Re: Air Con Not Working
Post by: Finbo on 11 August 2011, 09:11:26 PM
Was the car re-gassed by a Saab dealer or not?

Saab dealer fairly close to me is offering a full check for any leaks and problems and a re-gas for £49.

This may be a worthwhile first port of call to find out the exact problem.
Title: Re: Air Con Not Working
Post by: jmblack on 12 August 2011, 02:58:38 PM
Seems that the vacuum test OK but when regassed loses gas! Suspect therefore a leak that closes under vacuum but opens under pressure!

Might try the SAAB offer - will see what my local is doing.

Thanks
Title: Re: Air Con Not Working
Post by: Steve440 on 12 August 2011, 03:37:52 PM
Probably one of the Shrader valves.

Put a blob of liquid on the charge points with the cap removed and see if it there.

Steve

Title: Re: Air Con Not Working
Post by: jmblack on 16 August 2011, 04:03:05 PM
Tiny hole in pipe behind condensor - all fixed. Don't know why the vacuum test seemed to work..........
Title: Re: Air Con Not Working
Post by: phoenix on 16 August 2011, 04:06:11 PM
Quote from: jmblack on 16 August 2011, 04:03:05 PM
Tiny hole in pipe behind condensor - all fixed. Don't know why the vacuum test seemed to work..........

Because the vac test tends to suck in and seal splits, whereas pressure forces them open. Had a similar issue on my rad a little while back- held vac for over 30 mins but lost charge in a couple of days.
Title: Re: Air Con Not Working
Post by: jmblack on 17 August 2011, 02:35:33 PM
But hole was in metal pipe! You do have to take garages on trust, but sometimes...........