The two most obvious things to check are the vacuum hose that runs from the engine to the vacuum reservoir to the mode switch and the mode switch. Refer to N:01:02 and on in the Workshop manual. My guess is that the hose comming from the engine got knocked off. (It's really easy to do as there is little room to work in that area and it is hard to see). If your vacuum hoses are hard and brittle just replace them all. A vacuum leak affects idle quality, fuel mileage, engine life, and power. David Teitelbaum vin 10757 --- In dmcnews@xxxx, "Cameron Putsch" <putsch.1@xxxx> wrote: > I have found that it seems I have no vacuum control of my climate control system. When I switch to defrost it still blows in my face. It seems I am getting no vacuum functions, but everything is hooked up properly. Any ideas? > > Casey > > > [Non-text portions of this message have been removed]