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aircon stopped working

Steve Bramhall

New member
Hi all,

what started off as a slight tapping sound which turned into an embarrassing noise at idle turned out to be a squeaky belt on the aircon compressor...phew. Then I discovered my aircon compressor is not turning when I have the aircon on. Oh no! Something else to add to the list. Now it was working on the return trip from 993 question time as I felt rather chilly.

In the history it was regassed 6k miles back in 2006. The compressor turns by hand and the leds come on when the aircon buttons are pushed in.

Is it a simple case of re-gassing the system?

thanks Steve
 
You were at the 993 q/a, the answer to 90% of all problems with A/C is associated with lack of use, leave it switched on and vary the temp, sure it will cost you a couple of quid a year in running costs, but it will be there when you want it and will not be costing you a bomb if you run it only in the hot weather, don't forget the A/C also is drying out your interior keeping away mildew etc in the damp weather.[:)]
 
[:)] yep i was there and that's why I started running it on the way back. In fact it was me who asked 'does frequent use prolong the system' lol... so used it frequently over the last few weeks and it has stopped working...nice. So do you think it is a case of run out of gas or something more sinister?
 
There is a low pressure sensor in the A/C system that stops the clutch on the compressor engaging if the pressure's low - with no or little gas (which also contains a lubricant) the compressor would get wrecked. Given what you say about the symptoms this seems the most likely cause - so I'd get the pressure checked out first.

However the next question, if that is the cause, is why the pressure dropped - it may just be that 4 years have gone by since it was gassed (4 years is good going) or you may have a leak somewhere but either way start with the pressure check/re-gassing.

Kind regards
Anton
 
I've had to get mine done about every two years or so - they leak more the older they get!

Regards
Anton
 
Hi i was told a while back by a opc tecnition and also the same by the chap who came to re gas my air con,that due to the length of the air con hoses due to compressor being at the back of the car and all the other bits being at the front,that the hoses are very slightly porous and leak out gas over time.Just a bit of useless info,and if what they said is correct,it may explain why 993s seem to need regassing more often than other cars. Not sure why they had to be slightly porous and if they are how they get over it with the later 911s as i belive its now against the law to knowingly allow r134 air con gas to vent to atmosphere

:)

 
yes, I heard the same thing too.. if I recall correctly, the reason given was to stop the pipes expanding and breaking underpressure.. I didnt know about the legalities..
 

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