[s-cars] Adding Freon to 1995 UrS6

[Fred Munro]

Jay;

The Audi A/C system is intended to only be charged through the high side
port, which means of course that a little can of refrigerant will never
develop enough pressure to top up the system. The dealer's charging
equipment pumps the stuff in against the high side pressure.
There is an adapter that will fit to the low pressure cut-out switch port
that will allow you to use that as a low-side port. Check out the archives
for Tom Green's posts - he posted the details on the adapter a few years
back.

Good luck!

Fred Munro
'97 S6

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Jay M
Sent: Friday, July 06, 2012 8:44 PM
To: AudiFans
Cc: quattro at audifans.com
Subject: [s-cars] Adding Freon to 1995 UrS6


Hello all, My 1995 S6 is blowing warm air when AC is on full blast. I hear
the compressor working but air coming out of vents is not cold at all. I
suspect the system needs a topping off of R134A freon. Although I have never
charged the Audi S6 AC system with freon before I know on my other cars it
is not a difficult task. The problem I have with the S6 is I can't determine
where exactly the Low side port is located to attach my can of R134a. I did
research and that indicates the S6 system holds about 1.7 pounds of Freon
and should be filled to about 50 PSI on the low side when the ambient
outside temp is 90 degrees. I looked and found an obvious and easily
accessible port on the passenger side condensing unit located in front of
the radiator but that seems too good to be true. I also found another port
tucked away on driver side behind the radiaror. Can anybody tell me with
100% certainty where the low side port is located so I can attempt to
recharge my AC system without bl
 owing up the can of R134A?  JM 		 	   		  
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