First, depending on outside temperature, 57F may be okay

Second, you are getting science fiction from the shop.  If they have gauges
for 134-A she should be able to check if pressure okay.  System conversion
to 134-A should have changed fittings where gauges go.

John
----- Original Message -----
From: "trooz" <trooz@ADELPHIA.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, September 06, 2006 4:01 PM
Subject: a/c

>I was told that one cannot simply add 134-A to a cooling system that's only
> blowing about 57 degrees.  They said the system had to be totally
> evacuated
> and then filled with a precise amount.  Anyone know about that?  I've
> always
> had Freon added in the past (it's been R-12 until a few months ago when I
> had the system converted to 134-A).  Is this something peculiar to 134-A
> or
> just peculiar to this shop?  They're talking close to a couple hundred
> dollars to do it.
>
> Bob Trousdale
> '90 Westy
>