Wow, I guess I stand corrected on the pressure switch deal.  I just figured
any responsible auto manufacturer would put a high pressure switch on an AC
system.
Sure, in production runs as high as VW this would be expensive, but not
nearly as much as litigation an recalls.
When did VW start using them?  My 77 scirocco had them, so does my 86.  I
never bothered checking my van, haven't got to that point in the buildup
yet.

-----Original Message-----
From: Darrell Boehler <midwesty@taos.midwest.net>
To: PAT <pdooley@GTE.NET>; Vanagon@VANAGON.COM <Vanagon@VANAGON.COM>
Date: Saturday, July 11, 1998 1:52 PM
Subject: Re: Need a/c hose for 87 Westy Gl

>-----------------
>There are no high / low switches on some models.  Like no switches , none.
>My 86 westy 2wd 4 speed had none and  there were several others out  there
>that checked and found  none. I think all were westys.    My  a/c mechanic
>noticed this   when my high side went over 450  psi.  He  got a bit excited
>and he is usually an ultra calm person.  He and   I have sense added
>switches to my westy,  thanks  to Bill Dummitt.  You can sense  the  high
>pressure building up,  the compressor starts complaining  by vibrating the
>whole van.
>
>Darrell Boehler
>Makanda Illinois
>
>
>
>
>-----Original Message-----
>From: PAT <pdooley@GTE.NET>
>To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM>
>Date: Saturday, July 11, 1998 9:07 AM
>Subject: Re: Need a/c hose for 87 Westy Gl
>
>
>>Hey guys, don't forget about the safety controls built into all AC
systems.
>>The high pressure switch will kick the compressor clutch out before too
>much
>>pressure builds up.
>>
>>-----Original Message-----
>>From: GMBulley@AOL.COM <GMBulley@AOL.COM>
>>To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM>
>>Date: Saturday, July 11, 1998 7:21 AM
>>Subject: Re: Need a/c hose for 87 Westy Gl
>>
>>
>>>In a message dated 98-07-10 21:16:59 EDT, harald_nancy@EARTHLINK.NET
>>writes:
>>>
>>><< I was wondering if a stuck "expansion valve" could contribute to the
>>> hoses failing from too much pressure. My "expansion valve" looked pretty
>>>crusty when I replaced it during the conversion to R134a.
>>> Any opinions ? >>
>>>
>>>Check the gagues. I don't have a chart for the vanagon, but, If the high
>>side
>>>is VERY high, the expanison valve may be stuck.
>>>
>>>gmbulley
>>>cary, nc
>>>
>>
>