Within one day, overnight, it seems like all vacuum to my mode switch has vanished. Everything is correct at the switch, and all the hoses are still attached going from the front on back under the center console. Symptoms - no more 'hiss' (yes, i haven't rebuilt my diphragm yet) also, very easy to turn the switch, and obviously barely any airflow from the vents. Where in the back of the car does the hard plastic vacuum tube go next? is there any particular fittings that are known to come apart? -sean #3231 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/