Mk II Air Conditioning?

[julie at menloparkrandd.com (julie@menloparkrandd.com)]

Hummm... Brian.. For some reason the name sounds firmiliar... :)

>-----Original Message-----
>From: brian_wagner@sbcglobal.net [mailto:brian_wagner@sbcglobal.net]
>Sent: Wednesday, June 28, 2006 11:35 AM
>To: 'Dan Bubb', 'Jim Jarrett'
>Cc: scirocco-l@scirocco.org
>Subject: Re: Mk II Air Conditioning?
>
>Giggle
> 
>Brian
>
>
>----- Original Message ----
>From: Dan Bubb <jdbubb@verizon.net>
>To: Jim Jarrett <jarrett@rpa.net>
>Cc: scirocco-l@scirocco.org
>Sent: Wednesday, June 28, 2006 9:51:17 AM
>Subject: Re: Mk II Air Conditioning?
>
>
>The AC thermostat is mounted on the underside of the HVAC controls and has a capillary tube that runs to the sensor part of it that is jammed into something (evaporator?) in the passenger side of the heater box.
>The expansion valve is also visible on the passenger side of the heater box and quite accessible if you remove the air duct to the passenger side vent. Little pipe with a metal diaphragm about 1.5" dia and two capillary tubes coming off it.
>BTW, I was being a little tongue in check about the expansion valve. My home heat pump has failed twice and both times it was the expansion valve, once the AC valve, once the heater valve.
>Aside from something having a leak or the compressor failing there isn't a lot else to fail.
>Where's Brian Wagner when you need him???
>Dan
>
>From: "Jim Jarrett" <jarrett@rpa.net>
>To: "Dan Bubb" <jdbubb@verizon.net>
>Cc: <scirocco-l@scirocco.org>
>Sent: Wednesday, June 28, 2006 11:37 AM
>Subject: Re: Mk II Air Conditioning?
>
>
>> Quoting Dan Bubb <jdbubb@verizon.net>:
>> 
>>> I don't believe the pressure switches control the compressor. The
>>> thermostat controls compressor clutch on/off.
>> 
>> Ah! This does seem to make sense. And, you're not referring to the coolant
>> thermostat, correct? Where's the a/c thermostate?
>> 
>>> There is a low pressure switch that prevents the compressor from running
>>> if the freon charge is too low to prevent damage to the compressor and
>>> there is a high pressure switch that turns on the radiator high speed
>>> fan once the high-side pressure is above a certain point.
>>> The pressure switches are not valved to my knowledge.
>>> I can't see how the pressure switches, considering their relative
>>> functions can be responsible for compressor cycling, but don't have
>>> enough experience otherwise to suggest what might be causing it other
>>> than, perhaps, a bad expansion valve. (the expansion valve is always the
>>> problem unless you have a leak)
>> 
>> Ah. And this also makes more sense. Maybe John was referring to the expansion
>> valve. On a Scirocco, where is this?
>> 
>> Thanks!
>> 
>> =================================================================
>> | Jim Jarrett,McFarland, WI 2006 Golf GLS |
>> | mailto:jarrett@rpa.net 81 Rabbit Convertible 16v |
>> | 88 Scirocco 16V |
>> | Any problem can be solved with the proper application of |
>> | Force, Heat, Chemicals, or Money. |
>> ================================================================
>>
>
>
>_______________________________________________
>Scirocco-l mailing list
>Scirocco-l@scirocco.org
>http://neubayern.net/mailman/listinfo/scirocco-l
>_______________________________________________
>Scirocco-l mailing list
>Scirocco-l@scirocco.org
>http://neubayern.net/mailman/listinfo/scirocco-l
>