I mentioned adjusting the pressure switch only because it could be way out-of-adjustment. If it is screwed up so that it never opens then the coil will frost over and the pressure will go higher and higher on the low side. The low pressure switch OPENS when the pressure gets too low. If the switch is adjusted too high so it never opens the evap coil will freeze up. Maybe the switch is bad and never opens? He said he replaced the switch so we don't know if it works or is adjusted correctly. Anyway adjusting the low pressure switch is no big deal. The BIG deal is knowing you got ALL the air out and the CORRECT amount of refrigerent in. ANY air or the wrong amount of refrigerent and you CANNOT properly adjust the low pressure switch and the system will not cycle. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "Tom" <tomciodmc@xxxx> wrote: > From: "David Teitelbaum" > <SNIP>You could also have a low presure > switch way out of adjustment. The compressor MUST cycle. Try adjusting > it. It is the screw in between <SNIP> > > NO NO NO, Do not touch the switch!! C'mon David... If the pressure is too > high on the low side then the switch will not activate. The switch doesn't > control the pressure, it's the other way around. The switch should disengage > the compressor when the low side pressure drops to between 29 and 35. When > the pressure stays above 50 the switch will have nothing to do with it. [moderator snip] 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/