dual climate control

I have a 2000 bonni. The compressor went out first. I replaced that; and that was no joke. The a/c worked fine about a week. Now it will blow cold on the passenger side, but not the driver side. The car has the dual climate control. Some told me I might have something stuck in the fresh air filter port. i have no idea what is wrong with thing thing. Can someone please offer me some insight on the thing.

Roger, try turning the passenger climate control off, then adjust driver to 60 degrees. Let me know what you get there.