Ok, now I have seen this thread pop up many times, but I need some conclusive findings. I finished putting her back together after vacuum rack removal, fresh gaskets, fresh hoses, etc. and now she starts and dies. As far as I understand, it could be one of 2 things (but this is why I am posting, right?): Huge vac leak, or AFM. When I put it back together it is possible I overlooked something, but I triple checked everything, and it is as it should be (more on that later). When I tested the AFM (in accordance to what I found upon searching) E2->Vs should read 200-600 closed, and 20-1000 fully open. While opening and checking I observed that the values were nonlinear (they bounced around). Does this indicate a bad AFM?

Major second question:
I have seen many vac routing diagrams for vac rack removal, and they seem to differ greatly. I can attach the ones I have, so you can see what I am dealing with. I need to know which one to use. I think the PCV part is the most confusing. Thanks in advance. (88 T2 btw)

 

The sweep in values as you open the AFM is in steps.
They gradually go up to near wide open, then they level off & fall back a little.

If there are dead spots or drop-outs in the sweep - it's bad.

At least, if it's an S4, you can clean the contacts.

 

no dead spots, IIRC. I'll double check. Thats good news.

 

#1 Keeps the charcoal canister purge. Some like keeping it.
#2 Ignores the oil sump vent.
#3 Is like I did my S5. The fuel pressure regulator gets it's pressure from behind the throttle plates for better mileage, or in front of the throttle plates for big fireballs when shifting.

 

Also, #3 ignores the twin scroll actuator, which is one thing I am keeping. Also, what do I do with the hose coming from the bottom of the canister? I believe I am supposed to keep that one open, but I am not totally sure. Anyway, all of this confirms my deepest fear: huge air leak... ..... Guess its time for an air compressor and some soapy water.... Thanks for the help though. Also: on my AFM there are 4 or 5 huge sweeps as I open it, I am guessing this is what you mean. Nothing falls to zero, so I think I am OK. Maybe I can get some local help, and borrow an AFM. I am gonna test out my N/A AFM to see if the values are similar. I know I can't use it for the T2, but maybe I can get a better Idea on how these things work.