If you take a look at the new air-conditioning systems you'll see that
they have reduced the clutch pulley size on almost every AC system. They
did this because the R134a and replacements, drop ins, etc. Don't cool as
good as Freon so they spin the compressor faster to compensate for this.

Don't  just keep adding R134a you'll blow a hose or the system will
freeze in the miniture valves that are in the system. If your compressor
begins to rattle you're in trouble.

If you're 7 degrees below the center output reccomended temperature then
your system is working properly with R134a.

You can upgrade your compressor with the smaller clutch/pulley  will once
again reach 66 or lower at your center outlet.

Stan Wilder
83 Westfalia Air Cooled but not Air-conditioned (can't give up the HP
required).

On Sat, 30 Jun 2001 19:04:07 -0700 STEVEN PHILLIPS <sphil@CITYNET.NET>
writes:
> I use R134a in my 90 GL.  It seems not as cool as "normal". The site
> glass
> shows lots of little bubbles passing by - so many that it looks
> almost, but
> not quite, frothy. I guess that means I am a little low.  I don't
> have a
> guage and don't know much about AC.  Should I just add R134 until
> the
> bubbles go away? Or is that too unscientific?

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