A/C control not working/running rich

:runaround: I have a 92 RS 2.2 and when I bought it, the vent control didnt work. I had the EGR valve replaced recently, but the car still runs rich, like a vacuum leak. Could the A/C control vacuum lines, that I cant switch from defrost, to floor, etc, be related to the running rich problem? When I rapidly press the brake pedal, the engin idle goes up. Any help would be great! You can reach me at my e-mail kb9mnm@yahoo.com