The key point here is that you want enough freon in the system to maintain 35 degrees in the evaporator, too little and you can freeze up, too much and you get no cooling. I don't have a R134 temperature/pressure chart, so I can't say what pressures you should be seeing. Dave Sontos -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of cruznmd Sent: Thursday, August 11, 2005 8:27 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: Re: [DML] AC system compressor doesn't cycle, high discharge pressure Page N:09:01 says pressures are dependent upon ambient air temperature. 90 F (32c) the book says low side pressure is 25-32 psi. That doesn't jive with what you said. Am I reading this wrong? Also, what quantity (in weight) of freon should I load if I've converted to R-134a? Will the pressures be comparable? 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/