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Old 24 May 2012, 10:07 pm   #3 (permalink)
hls
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Default Re: adding R134a to a 2002 Sienna


"Michael" <mrdarrett@gmail.com> wrote in message
news:f95a3ab9-43a3-46ba-9e09-d9c02048c6bf@nl1g2000pbc.googlegroups.com...
>I have the exact same problem as this guy, and I'm wondering if the
> solution is the same.
>


It might be, or it might not be. You will need to measure the pressures in
the rear
system and see what is going on. If you dont achieve the specified
pressures, then
you have either a lack of refrigerant OR you have a mechanical problem with
the
compressor, valves, etc.

If you know how to do it, you can buy a can of refrigerant with a pressure
gauge,
and you can attach it to the vacuum side of the compressor. Add
refrigerant
very slowly until your pressure measurement reaches the value mandated. (You
can find this on your can of refrigerant or you can find it from the data
for your
particular application)

If you have adequate cooling, then you guessed correctly.

The more certain way is to take this beast to a competent refrigeration
mechanic
and avoid the mystery.



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