AC York Compressor Clutch Acting Up!!!

[pat]

Just fill until the low side is above the freezing point in the evaporator.
One catch- the motor must be running at cruising rpm(2-3k) when you read the
low side pressure.

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of Mark Rosenkrantz
Sent: Monday, March 19, 2012 9:43 PM
To: Bill Green
Cc: quattro at audifans.com
Subject: Re: AC York Compressor Clutch Acting Up!!!

There are 2 ways to do it correctly.  One is with guages hooked to both the
low pressure and high pressure ports.  This is standard on most cars.  VAG
only has one port (officially, but some cars can have a port attached at
the compressor for high pressure) and the only way to charge a stock car is
to completely evacuate the system and then fill with a measured amount.
Both under charging and overcharging is poor for performance as well as the
compressor itself.

I think this is STUPID as there's no way to "top off" a system after years
of service (IMHO, all systems leak a little over time).  For example, my
Escalade needed topped off after about 6 years.  Just a little, but it was
needed.  Nothing "wrong" with the truck.  VAG's procedure would have been a
full evacuation and recharge from a scale.