Thanks guys. VERY informative stuff. I
think i resolved the problem just as Jeff and 82 GT advised. I used a combination of the 2 methods.
And yes... I shouldn't have touched that idle stop screw in the first place! I've also replaced the idle bypass valve for good measure.
After resetting the ECU, adjusted idle & TPS, the engine still sound like it was not idling correctly. But after about 85 total miles of driving to and from work, it was as if the EEC-IV "woke up" and idle was OK.
Ok... So now i got the darn thing to idle somewhat correctly.
Now i'm noticing that engine will idle at 850rpm or so... perfect. But after a few minutes, the idle will DROP to around 700-750rpm and begin to sputter as if power was cut in half. I would then have to rev the engine a little to prevent it from sputtering and eventually stalling out.
Did i miss something?
PS- I posted new message about another weird issue. Subject: "Smoke Blowing Through The Vents!" I don't know if all these issues are related.