That all makes sense but why does the compressor cycle at idle with the blower fan on but stops cycling with the blower fan off? (The cabin air fan) Nathan --- In dmcnews@xxxxxxxxxxxxxxx, "Tom Niemczewski" <tomciodmc@...> wrote: > > Hi Nathan > > I sure hope it's not the one I've seen some time ago that says that you can > vacuum the system using engine vacuum. If that is what you did you'll be ok > for a while but later on you can expect some serious corrosion inside the > A/C system. Engine vacuum is way not enough to get rid of all the water in > the system and refrigerant with water becomes very corrosive. For that > reason it is said to vacuum the system using a vacuum pump for about 45 > minutes. > > As to your compressor not cycling... the pressures in the system depend a > lot on the ambient temperature. Since you said that it was 95 degrees the > compressor will have a very hard time keeping the pressure low enough in > that case especially if you have a regular fixed orifice tube. The variable > orifice (VOV) helps to keep the pressures within the proper range and makes > the compresson cycle even at idle. If it's blowing cold air even at idle you > should be fine. > As to the amount of refrigerant... 28oz is a bit low. The best results are > achieved with between 32 and 35oz of R-134a. If you add some you might > actually see the compresson start to cycle but even if it switches off it > will be for just a short moment at that temperature. It will stay running a > lot longer. > > Good luck > > Tom Niemczewski > vin 6149 (in Poland!) > Google earth: 52°25'17"N 21°1'59"E > tomciodmc@... > www.deloreana.com > > > > ----- Original Message ----- > > Nathan Sobieralski <valleyrat12@...> wrote: > > A big thanks goes out to who ever posted the cheap do it yourself AC > > fix in the tech section. I followed his advice very closely and now > > I have cold air! But..... > 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/