[s-cars] An A/C question

[Matt Russell]

On 8/2/03 6:00 AM,  Dave asked:

> Message: 10
> From: Djdawson2 at aol.com

> My A/C is actually working fine (a 134a system, 93 S4)... however, out of
> curiosity, I was going to measure my high and low side pressures, and see if
> the
> charge was up to snuff.  Interesting thing is, I can't seem to locate a low
> side port.  The high side is clearly accessible on the passenger side of the
> condenser, but in tracing the low side line from the evaporator down along the
> firewall, into the engine compartment, through the dryer and back to the
> compressor, I see no low side port.  Am I missing something here, or is the
> low side
> port located behind the cash register at my local Audi dealer?
> Thanks,
> Dave in CO

Dave - not sure I can help you with the low side port, though I'm sure
another lister will be able to help you out, as I've seen a post about this
previously, but you can access various pressures through the climate control
system, which may give you some of the values you are looking for.
http://www.20v.org/climate.htm#codes

(I have the other site bookmarked, but it appears to be down right now:
www.12v.org)

HTH,

-Matt, co
92 s4