How do you adjust the IAC valve? All I know how to do is test it w/ a multimeter.

How did you determine the Thermac valve was broken? I'm assuming that's the little switch thing that is located inside the air filter housing.

How did you go about switching to a 3 wire sensor? Replacing the sensor is high up on my list of next steps.

We're still stumped here. Vehicle will hardly start. It is definitely trying to run very rich...