should our AC be cool or cold?

Mike M · May 5, 2013

Hi all,

Been out in the 993 today and really struggled with the cabin temp. I replaced the condencer last year and the asssociated tube thingy next to it (apologies cant remember its name!) Trouble is it was a winter job so couldnt really measure its success. I was going to get it into my indi for a good look over as it seems to be producing cool not cold air! Im sure from faided memory that it used to put cold air out!!! Any other thoughts on general areas of failure that i need to look at or am i expecting too much from a 19year old lass!!

Cheers

Mike

Jonttt · May 6, 2013

I had mine serviced at kwik fit last week for £49.they do a drain, pressure test and refill. If it fails the pressure test they don't charge you so it a cheap check. Your revs should drop as you turn it on / off. Mine is definitely blowing cold air today and held 86 psi which is good. My system was empty before and I don't think it had been serviced for many years.

T911UK · May 6, 2013

This should answer all your questions!

http://forums.rennlist.com/rennforums/993-forum/351059-complete-a-c-diagnosis.html

Gordon Attar · May 6, 2013

ORIGINAL: Jonttt

I had mine serviced at kwik fit last week for £49.they do a drain, pressure test and refill. If it fails the pressure test they don't charge you so it a cheap check. Your revs should drop as you turn it on / off. Mine is definitely blowing cold air today and held 86 psi which is good. My system was empty before and I don't think it had been serviced for many years.

Had mine done by F1 autocentre £42 inc vat

colt · May 7, 2013

The performance of the system is not on par with modern cars , probably due to the small size of the condenser (that is the radiator that dissipates the heat from the gas which has just been passed through the evaporator(radiator like device inside the cabin) taking the heat with it ) Having said that it should be cold not cool. I treat any car presented with no gas with suspicion. So far I have not seen a car lose all of its gas through natural leakage and it would appear odd not to have a working system filled up following a repair or maintenance ? Many 993's leak there gas quite slowly ( a slow leak is two months or so) but nevertheless provide a diminishing cooling effect for the short hot spells we seem to experience.
Christian......................

Mike M · May 8, 2013

Thanks for the replies guys. I can assume a slow leak, just going to be hard to pin point where from. When it died origionally, I had it regassed and pressure tests were fine, however after a month or so it was warm air again and I tracked it to the condencer when I heard it whistling air out! I dont want a regas to find theres a slow leak and still passes the initial pressure tests! Think I may look at getting the hoses changed as a process of elimination, doubt its cheap!!