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Date:         Thu, 3 Aug 2006 09:14:13 -0700
Reply-To:     Michael Diehr <md03@XOCHI.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Michael Diehr <md03@XOCHI.COM>
Subject:      My R134a experience
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

My 85 westy has a slow leak (as many do) and so about 3 years after my last R12 chargeup, I decided to go for a R134a conversion. The shop (Harris Radiator near San Diego) did a great job, and even offered me a guarantee, offering to change back to R12 if I wasn't happy with it.

Performance-wise, it's decent and I think livable. Not ice-cold, but quite cool, and I like the idea of not leaking freon, so I think I'll stick with it.

The only problem that I've noticed is that when running the AC at high engine rpm (3000 ish) the compressor is making a "hum" sound. Loud enough to be heard over engine & road noise on the freeway. I can't remember if it made that sound while running on R12, since it's been a while, but I don't think so.

Is it possible that R134 is putting more stress on my compressor and hence the noise? If so, is this the sound of progress or incipient failure?


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