Check your ignition system as well, it isn't uncommon for old plug wires to deteriorate over time, if they are able to ground themselves, that plug won't fire. Running on 3 out of 4 cylinders tends to make the car feel a tad low on power. But yeah, make sure the fuel system is up to snuff, that should be a given for a car that has sat for over a year without running. As far as diagnosing the ICV, you can easily remove it from it's little rubber mount thing and bench test it with 12V and watch for the little valve open and close inside as you apply the current. Not to discredit you, but make sure the ICV was reinstalled in the correct orientation, there is an arrow on it that should point towards the manifold, throwing that out there.
Search how to test your plug wires and coils, its pretty easy and can eliminate the ignition system in one swoop right off the back. But this sounds very similar to the issue I had when I had a bad plug wire, I would check into that first, as its free and very easy. Now if you find out that it is a bad plug wire, it isn't quite free anymore.
Topic: ICV Diagnosis (Read 2735 times)