Usually that's a sign of low Freon. You may be leaking past the seal or
maybe the switch has been doing its job all along & not letting the system
run with a low charge.

Tom
www.towercooler.com

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
Michael Sullivan
Sent: Tuesday, August 10, 2010 6:58 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Replacing pressure A/C Pressure switch w/o losing Freon

Bad news...no cool air.  Drove about 5 miles.  When I got home the fan in
front ran for 5 minutes until I pulled the harness on the new switch in the
rear D pillar and the fan stopped.  Plugged it back in and all good.
Scratchin' my head.
Michael in San Antonio
91GL Weekender AT 2.1L 'Gringo'

On Tue, Aug 10, 2010 at 5:50 PM, Michael Sullivan
<sandwichhead@gmail.com>wrote:

> OK....As you all know, I am fearless!! So I pulled the old switch out
> and just pointed that end of the van toward the Honda in case it flew
> off like a projectile. Anyway, popped right off and the little valve
> behind worked like a charm.  Popped the new one on in a about a minute.
No loss of freon.
> Gonna take a spin. Thanks to all.
> BTW-New switch and old one are made in UK by RANCO(?).  Says VW Audi on
it.
> Got mine on Ebay for 40.00.
>
> Michael in San Antonio
> 91GL Weekender AT 2.1L 'Gringo'
>
>
>
>   On Tue, Aug 10, 2010 at 5:11 PM, Edward Maglott
<emaglott3@gmail.com>wrote:
>
>> You might check with community colleges or tech schools that have an
>> auto tech program.  The one where I work usually teaches AC stuff in
>> the Summer.  You might get them to suck out the refrigerant, then you
>> take the van and do your work, then they evacuate and refill with the
>> refrigerant you provide or pay for.
>> Edward
>>
>>
>> At 05:15 PM 8/10/2010, Jeff Schwaia wrote:
>>
>>> Ah yes, expanded gas as opposed to compressed.  My bad...
>>>
>>> -----Original Message-----
>>> From: Mike S [mailto:mikes@flatsurface.com]
>>> Sent: Tuesday, August 10, 2010 1:01 PM
>>> To: Jeff Schwaia
>>> Cc: vanagon@GERRY.VANAGON.COM
>>> Subject: Re: Replacing pressure A/C Pressure switch w/o losing Freon
>>>
>>> At 03:28 PM 8/10/2010, Jeff Schwaia wrote...
>>> >"270 liters of oily freon gas"...  You must have the optional
>>> >super-duper, heavy duty A/C system!  ;-)
>>>
>>> R-134a weighs ~4.25 kg/1000 liters at atmospheric pressure and room
>>> temperature, so 270 liters is about 1.15 kg of freon. VW says the
>>> Vanagon holds 1.35 kg of R134a, so really, he must have the
>>> slightly-shrunken, light duty system.
>>>
>>
>