MAF's can't go partially bad can they?

And there are two vac lines that I have not thought until just now, because I didn't know about them until I looked at a vac diagram. Apparently there is one that branches off to the tranny, and one that goes to the EVAP canister. I cannot find either of these. Any clever ideas on how to test them? It's hard to test the lines with carb cleaner since the car idles so radically.

All of the lines I can see either look fine or were just replaced. Another thing I haven't checked, just assumed worked fine is the PCV valve, would that cause this issue?