egp320i

So it seems the old freon is up around $80/pound now.
my clutch is kicking on/off so its low, maybe 2 pounds.
I think I seen the kit for about 50 bucks which is just the dryer and maybe some pag oil?

Seems it would be worth it to go with the new for the price.

from AZ...



Santech
AC Conversion Kit; For Conversion to R134A
Kit includes PAG oil, caps and seals for system. Refrigerant conversion may also require changing of mechanical parts of system not included with this kit, such as compressor, receiver drier, hose assemblies, etc. 1 kit per car.

4Driver4

Except your 94 system should be 134a from the factory, so conversion is not required.

nothing

Are you sure you have R12?

I have converted my car, but didn't use any kit. Following the the TSB from Audi on the subject is your best bet. My AC is super cold now, so I disagree with R134a naysayers.

But I doubt you have R12 anyway.

nothing

But then I did the conversion on my B4 myself so I know it was done right - most shops advertising this service will cut corners, and "retrofit kits" are horribly incomplete/inadequate.

Another factor is that if you are having to refill R12, you probably have a leak. I don't like to spend $100 a pound on something to put into a system that that I know it will leak out of. To each their own.

egp320i

I did just grab if from the C4 forum which should be the same for the B4:

Number: 95-04

Date: Nov. 1, 1995

Subject:
A/C Refrigerant System (R-134a), Capacity

Model(s):
100/A6, S4/S6
From 10.92 production

The revised Repair Manual page will be integrated into the next Repair Manual update.

Please note the revised refrigerant capacity and additional notes.

A/C refrigerant system (R-134a), capacities

Refrigerant R-134a

Note: When charging the system on the high pressure side, always use the maximum A/C refrigerant quantity specification (800g), as some refrigerant remains in the hoses of the refrigerant recovery/recycling unit.

Model Production period Quantity
Audi 100/A6, S4/S6 from 10.92 750 + 50 g
(26.5 oz + 1.8 oz)

Notes: ^ When refilling the A/C system on vehicles up to 10.94 production, check the existing refrigerant capacity label for the above quantity. If necessary, apply new refrigerant capacity label Part No. 8A0 010 126 P (showing the revised quantity) over the existing one.^ Condenser Part No. 4A0 260 403 AC is used from 09.94 production (4A_SN 029024) and will be the only one available as a replacement.

egp320i

As I see it you have 134R, 134A and then R12 which is the latest?
damn, I am not up on my freon varieties.

nothing

Your 94 already has R134a, which is the new stuff that you can get cheaply. Go get it refilled, you don't need to retrofit.

quattro.pilot

never heard of 134R

egp320i

I can't transfer it onto my new computer and I am still mulling over giving them another 50 bucks or something to get a working copy.

egp320i

as in year 2000 models and up.

I guess once again this shop which I just generally asked about charging the system does not know this info.
quoted 155 labor and about 150 bucks for 2 pounds.

I'll certainly go somewhere else and call around.