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Old 20 Jul 2011, 08:31 pm
T.H
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Default 1994 Acura GS-R AC not cold but cool

I have had several questions answered here and so allowed me to move
forward confidently on performing my own service.

I am the sole and original owner of the vehicle, ~75K miles and
garage-kept. No front end damage or rock strikes to the condenser coil
of the AC system identified. Actually, I use the AC very infrequently
but need it on at times (passenger-demand...OK, the wife). :-))

The AC has shown to not blow as cold as all the previous years and that
is not dependent upon the current heat wave, that is, inside the shade
of the garage it is not cold, but cool. I note a hissing/bubbling noise
emanating from the expansion coil where the freon boils and cold
results. I can hear this after running the AC for a while and shutting
the engine off. That may or may not be important to my question.

Anyway, would the lubricant AND oil in this be compatible and safe to try:

http://www.amazon.com/R134a-ZERO-SYN...=pd_sim_auto_2

?

If not, is this R-134a a better choice:

http://www.amazon.com/EZ-CHILL-R134A...1211068&sr=1-7

?

Both are offered by Interdynamics through Amazon.

Thanks in advance for any and all suggestions.

T.H

PS

Knowing people are hesitant to sometime click on links, I suggest
looking at the Web-of-Trust add-on for IE, Firefox, and Chrome. It may
be available for other browsers, as well.

www.mywot.com


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Old 01 Aug 2011, 02:27 pm
Tegger
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Default Re: 1994 Acura GS-R AC not cold but cool

"T.H" <tinfolihat@nospamplease.com> wrote in
news:F8ydnbhOeYvwHLrTnZ2dnUVZ_jCdnZ2d@insightbb.co m:

> I have had several questions answered here and so allowed me to move
> forward confidently on performing my own service.
>
> I am the sole and original owner of the vehicle, ~75K miles and
> garage-kept. No front end damage or rock strikes to the condenser
> coil of the AC system identified. Actually, I use the AC very
> infrequently but need it on at times (passenger-demand...OK, the
> wife). :-))
>
> The AC has shown to not blow as cold as all the previous years and
> that is not dependent upon the current heat wave, that is, inside the
> shade of the garage it is not cold, but cool. I note a
> hissing/bubbling noise emanating from the expansion coil where the
> freon boils and cold results. I can hear this after running the AC
> for a while and shutting the engine off. That may or may not be
> important to my question.




You're probably just low on refrigerant. The average system loses a tiny
amount of refrigerant each year, so some eventual loss of performance is
normal.

One trick that does help with a marginal system is to turn the system to
"recirculate" from "fresh" (recirc is the dashboard icon which shows the
arrow circling entirely inside the car). This way the system is cooling air
that's already partially-cooled instead of needing to cool with 95-degree
air all the time.

Recirc is not a totally-sealed mode, so there's still a small amount of
fresh air leaking in, but the volume of fresh is a lot lower than it is in
"fresh" mode, so it's easier for the system to keep the air sufficiently
cool.



>
> Anyway, would the lubricant AND oil in this be compatible and safe to
> try:



<snip URLs>


You already have R134a. My understanding is that these systems are a bit
finicky and much more in need of precision when refilling than the old R12
systems. Improper filling can destroy the compressor, and make the
resulting repair bill VERY expensive! I would not attempt self-filling,
myself.

If you're only a bit low due to age, you won't spend much more than $100 to
have it topped up by a professional (and probably less). That would be my
choice.



--
Tegger
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