So these CEL codes are killing me.
First, my car does not match the parts schematic which shows this:
My #3 from the diagram above has only one large hose from the SAI, I don't have a #7 or a #4.
I've replaced my version of #3 and #14 and am still throwing the code.
The check valve #2 works well and the system holds a vacuum for about 2 minutes when drawn down with a vacuum pump. It does slowly leak back to ambient but the leak is very small. Anyone have experience repairing this gem of a system? What could be causing the CEL?