Does your a/c turn off when running it at either the third of forth click on the fan blower speed? If it does, you may need an upgraded relay. If I remember right, these blower relays are more narrow that the regular relays and are silver in color. The original relay's amps where too low, which made them click off to cool down. When they'd cooled, the blower would kick back in. Try switching your fan speed to one or two klicks.. those are on a different relay. Pat --- In dmcnews@xxxxxxxxxxxxxxx, "Ryan Wright" <ryanpwright@...> wrote: > > My A/C simply cuts out sometimes when driving. The air will blow nice > and cold, then at random will slowly get warm. It eventually kicks > back in and cools down again, sometimes after 30 seconds, sometimes > after 5 minutes. Driving doesn't affect it - I can be at idle or at > speed the entire time. > > I suspect one of the pressure switches is kicking the compressor off > when it shouldn't; all fans (interior blower & cooling fans) are > working fine. I'm running R12 and the system is full per DMC specs. > A/C shop looked at it but the problem is intermittant and they're > having trouble diagnosing it, as every time I bring it in the darn > thing works fine. > > Any advice on how I might troubleshoot this? > > -Ryan > 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/