95 A6q AC Questions...

[toomanyaudis at aol.com]

Hi Tony,

to my knowledge, I am not getting any high pressure cut outs.? 

Trouble is with this system that I can't get a pressure differential between the high and low sides.

If the normal range is less than what I am registering, then I'll simply?release gas bit by bit until I get into that range.

the good news is that I'm not leaking any refrigerant and the compressor is working.? so, I think if I get my pressures in the right range, I'll be good to go.

-- Tom


Tom, the high side depends on the outside temps. However, 210-250
sounds a bit high. Is the compressor turning off in the 250 range? If
so, it may be triggering the high pressure cutout.

Tony Hoffman




-----Original Message-----
From: Tony Hoffman <auditony at gmail.com>
To: toomanyaudis at aol.com
Sent: Mon, 28 Jul 2008 12:12 am
Subject: Re: 95 A6q AC Questions...



Tom, the high side depends on the outside temps. However, 210-250
sounds a bit high. Is the compressor turning off in the 250 range? If
so, it may be triggering the high pressure cutout.

Tony Hoffman

On Sun, Jul 27, 2008 at 8:24 PM,  <toomanyaudis at aol.com> wrote:
> Does anyone know what the operating pressures of a 95 A6q AC system should be?
>
> I'm trying to determine if I overcharged or undercharged the system after I 
replaced a leaking hose. System cools, but not particularly cold.? My 88 80q 
cools much, much better.
>
> Receiver Drier and Expansion valve were replaced with hose, system vacuumed 
out overnight, recharged through high pressure port and refrigerant amounts 
estimated from content on cans.? Unfortunately, there's no low pressure port on 
these cars.
>
> here are the specs:
>
> Ambient Temp: 82 Degrees Farenheit.
>
> Pressure in System Resting: 105 PSI
>
> Pressure with Compressor Turning: 210 (idle) to 250 psi, depending on engine 
speed.
>
> Of course, if I had a low pressure port, I could do a better job of diagnosing 
the problem.
>
> Any input?
>
> Thanks,
>
> Tom
> 95 A6q
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