Thanks to everyone for their insights. If R-134a runs at higher pressure, I guess that would explain the cycling. It sounds like the path of least resistance would be to go back to R-12. - Geoff 10718 --- In dmcnews@xxxxxxxxxxxxxxx, "Tom Tait" <TTait@xxxx> wrote: > There are R-12 alternative refrigerants - non CFC based which claim to > be compatible with R-12. In theory you can even use them for a top off. > When these products claim compatibility of that they are certified for > use in an R-12 system, that only means that they are environmentally > acceptable - no guarantee of performance. I have not tried them. I > guess if someone has gone to the trouble to mass produce and market the > stuff it may be ok, but I vote real R-12. > > Tom > 10902 > > -----Original Message----- > From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf > Of Marc Levy > Sent: Monday, July 25, 2005 7:16 AM > To: dmcnews@xxxxxxxxxxxxxxx > Subject: Re: [DML] Re: Air Condition at Highway Speeds > > eco-friendly?? Never heard of such a thing. :) > > the PO probably switched from R-12 to R-134a.. More for financial > reasons than environmental reasons, but that is a whole different > discussion. > > If the system was not flushed, and oil replaced then it is possible you > have damaged the compressor and clogged the system. R-134a also runs at > higher pressures, and have seen other DML'ers discuss making other > modifications to the system for conversion. I am not familiar with the > details, because there has never been a good reason to convert. > > For anyone considering this now, check out the prices of R-12 vs R-134a. > You will see, it is not worth it to convert... stick with R-12. > > > > --- geoff_ombao <geoff_ombao@xxxx> wrote: > > > Interesting. The prior owner stated that he switched to the new > > eco-friendly refrigerant. > > Could this be causing the cycling? To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/