What is the proper operation of the mode switch? In other words, where should I get air on the various settings? Here's the deal: I get A/C just fine on the three A/C settings, but there isn't much of a difference between them. The airflow is boosted slightly when on max. Mid and low appear identical. When the temperature is switched to hot, "vent" directs air at my feet, "heater" doesn't seem to direct air anywhere, and "defrost" seems to direct more air toward the windshield but not as much as I'd expect. If I switch the temperature over to cold, all of this changes completely! So I dug into it tonight. The dreaded previous owner screwed up my vaccumn lines. I did my best to sort them out, following the diagram here (http://www.usadmc.com/dmcstore/images%5C730.gif). There was an extra T where one shouldn't be, another with a missing hose, etc. Anyway, I think it's all as it should be now, but the situation hasn't changed any. I've: 1. Rebuilt the mode switch. There are no vaccumn leaks that I know of either up front or at the engine - doesn't mean they aren't there, just that I don't know of them. :) 2. Sealed (as best as I could) that foam behind the heater box with some duct tape. 3. Tried to sort out the vaccumn lines, I THINK they're correct, but who knows. Any thoughts? -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/