It is a VSV but not the VSV for EGR. I have never heard of one failing so whatever you do, don't mess with it.
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Guess what I found in the first 15 minutes? The tube that runs through the intake between the EGR valve and the VSV was TOTALLY blocked. It was tough getting the hoses off to check, but I definitely have flow now.
why would you take off the intake?
Don't own an 80, looked at a few, but after reading this thread it makes me wonder, why the hell Toyota even put that vavle under the intake like that. And why they ran the line through it that way also. Why not just put all that crap on the fender like a 60 was.
I'm sure it was aesthetics, but what a pain. Seems like the whole deal could be replumbed and mounted where you could get at it easier.