My car is not running the way it should be and I scan for some codes I got the following codes and wanted to see what it might cause this.

16891 - Idle Control System RPM Higher than Expected.
P0507 - 001 - Upper Limit Exceeded - Intermittent
17887 - Brake Boost Vacuum System: Mechanical Failure
P1479 - 008 - Implausible Signal - Intermittent
16825 - EVAP Emission Control Sys: Incorrect Flow
P0441 - 001 - Upper Limit Exceeded - Intermittent

I still can't find the vaccum leak and I'm wondering if the incorrect flow is when I changed the check valve if its in wrong direction.