Jake-Check to see that no WARM air is getting into the evap box, either thru' the recirc door over the fan or thru' the mixing box. The temp knob is in the blue, right? Make sure the knob and actual switch setting are the same and that the coolant flow to the heater core is cut off by the valve. I once tried to diagnose bad a/c performance with the temp control set on warm. Warren at DMC Jake Kamphoefner wrote: > All, > > A/C experts, please read! I've got a really strange issue with my air conditioner that I'd like to properly diagnose before I go replacing more parts. This is a long post, but I wanted to include all the relevant info: > 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/