Any one know anything about A/C?

[haygood at myway.com (Brian Haygood)]

If R-134a causes corrosion in general, why are you only seeing A4 cars with this?  VW has been using 134a since '95 (my Passat, for example), and that's about the only thing on the car that hasn't been fixed.  Sounds like a problem with a particular type to me - maybe a corrosion problem, even one that wouldn't have happened with R-12, but doesn't sound like a blanket problem with 134a cars.  How's that for a runon sentence!  



Isn't there a direct replacement for R-12 out now?  I thought I had seen something that you can throw in your R-12 system that is as cheap as R-134?  Am I dreaming?



BH









 --- On Mon 06/20, David Utley < fahrvegnugen@cox.net > wrote:

From: David Utley [mailto: fahrvegnugen@cox.net]

To: sukchew@cox-internet.com, timjmcconnell@gmail.com, Scirocco-l@scirocco.org

Date: Sun, 19 Jun 2005 23:31:53 -0500

Subject: RE: Any one know anything about A/C?



Well, I have to disagree...  The two core buyers that come by looking for<br>compressor cores and I agree, compressors were much more likely to go to<br>shiesse when R134 was introduced.  It is something about when moisture gets<br>into the mix with R134 and its oil, it becomes corrosive.  What's more is<br>the compressors have to run at MUCH higher head pressures (50% IIRC), and<br>the condensors and evaporators are not the same.  They will each work in<br>their conterparts systems, but not as well since they were not designed<br>to...<br><br>I can't find the link with a lot of specific evidence that demonstrates<br>R134s faults, but I did find a few with 'R134' & 'Corrosive' under a search<br>on Google...<br><br>BTW, I should mention that the compressors I mention, nearly all are Sanden.<br>Also, most of these AC systems have not been touched since new.  Approx. 10%<br>had their clutches shear away and go dancing down the road.  To me, all this<br>spells 
corrosion...<br><br>HOWEVER, I will try to find that link...<br><br>David<br><br>-----Original Message-----<br>From: Chuck Blue [mailto:sukchew@cox-internet.com]<br>Sent: Saturday, June 18, 2005 12:53 PM<br>To: David Utley; Timbo; Scirocco list<br>Subject: Re: Any one know anything about A/C?<br><br>I can't believe you replaced 250 compressors because the had R134 in the<br>system.There must have been some other reason.<br>  I am not a AC expert but my experience with daily work on recovery<br>machines has not borne out your statement.<br>If the AC system is properly set up and charged R134 will work as good as<br>R12 with the possible exception of cooling at idle.If your AC is making cold<br>air it don't matter what is in the system.<br>my .02 worth.<br>ole blue<br><br>----- Original Message -----<br>From: "David Utley" <fahrvegnugen@cox.net><br>To: "Timbo" <timjmcconnell@gmail.com>; "Scirocco list"<br><Scirocco-l@scirocco.org><br>Sent: Sunday, June 19, 2005 12:01 
PM<br>Subject: RE: Any one know anything about A/C?<br><br><br>><br>><br>><br>> -----Original Message-----<br>> From: scirocco-l-bounces+fahrvegnugen=cox.net@scirocco.org<br>> [mailto:scirocco-l-bounces+fahrvegnugen=cox.net@scirocco.org]On Behalf Of<br>> Timbo<br>> Sent: Saturday, June 18, 2005 10:30 AM<br>> To: Scirocco list<br>> Subject: Any one know anything about A/C?<br>><br>> Specificly - I think there is enough there of my dealer installed a/c<br>> to make it work. It needs to be recharged - so there's no pressure. Is<br>> there a way to make the clutch of the compressor snap on to test it?<br>> (there's no belt on right now)<br>><br>> Also - Will I regret going rf134a? anyone got some r12?<br>><br>> --Timbo<br>><br>> --<br>> Put 12V to the connection you see hanging off of it, that is the<br>> connectoin<br>> for the electro-magnetic clutch.  Be sure to get them the right way<br>> around,<br>> I dunno if it would cause damage or not, but...<br>><br>> R134 is highly 
corrosive, we replaced 250 compressors last year, and 95%<br>> of<br>> those were for A4 bodied cars.  Stick with R12, there is no proof that it<br>> is<br>> harmful to the environment except Duponts word (when they were about to<br>> lose<br>> their patent on it)...  If you are interested, I will find more links to<br>> support my claims...<br>><br>> David<br>><br>><br>><br>> _______________________________________________<br>> Scirocco-l mailing list<br>> Scirocco-l@scirocco.org<br>> http://neubayern.net/mailman/listinfo/scirocco-l<br>><br><br><br><br>_______________________________________________<br>Scirocco-l mailing list<br>Scirocco-l@scirocco.org<br>http://neubayern.net/mailman/listinfo/scirocco-l<br>

_______________________________________________
No banners. No pop-ups. No kidding.
Make My Way  your home on the Web - http://www.myway.com