Larry, two things.

First, you need to get some kind of thermometer in
your vehicle so you can have some quantitive
measurements. I would recommend a thermometer that
measures both indoor and outdoor temperature. Use it
to measure both the performance of your current system
as as well as the impact of any changes.

In my van, typically the A/C has no problem with
cooling the inside of the van 25F degrees below the
measured outside temp. Today when I left work at 4:00,
the inside of my van was 112F while the outside temp
(measured in the fresh air duct just in front of the
passenger door was 102F). It took almost than 20
minutes to lower the inside temperature to 76F. I find
that my van is comfortable any time the measured
interior temperature falls below 80F.

That is typical performance of the A/C in my camper,
it usually cools at a rate of 3F degrees per minute.

My measured outside temperature is always higher than
what the weather station says because the van is
always in the sun on pavement. My thermometer is
mounted where the rear view mirror was for reference.

Second, I would wonder what the impact would be to the
existing system of running a high side pressure line
the entire length of the van to the new
evaporator/expansion valve location. How will this
connection be integrated into the current plumbing?

Thanks,

=====
Tim Hannink
Goldibox - 1987 Vanagon Camper, Wolfsburg Edition
Winter Park, Florida
http://home.earthlink.net/~tjhannink/
http://groups.yahoo.com/group/wolfsburg_campers
http://photos.yahoo.com/tjhannink [Vanagon] Album

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