All:
Thanks for the thoughtful responses. I would say my skill level is particularly up there. Its just that with the V in the V8 models, its hard to really track things down without tearing things down to some extent (I'm so particularly against that because I'm pretty far away from my tools here in sunny Tucson, AZ).
My car is currently parked at Houston International.
I've looked at the various vacuum points. I can't seem to find a vacuum leak. Granted, to be effective I really should look at getting a vacuum gun and plug it in at various spots and try to take a vacuum but, yah.
Bingo! It did at one point have an ABS issue. I was doing intensive suspension work and in the process I broke the front right ABS sensor. Now, since then I've been a good owner and I attained a new sensor and installed it. But you've reminded me that around that time I was experiencing strange idle problems but only momentarily. Could this somehow be related? You mention the OVP relay, but I've tested that particular unit and it seems to function just fine. Also, the ICU gets power at pins 2 and 4. I can't quite seem to understand why the ICU isn't processing signals and sending power at some frequency to the ICV. It boggles the mind. Truly, it does.
Well, I'm currently in Tucson and I probably won't be able to get my hands on it until the fifth or sixth of next year.
Hmm... David Poole. I'll definitely look him up. My brother works in Dallas and I visit him on occasion. Does anyone have an email he responds too. I'd sure like to start an email conversation with him before just showing up at his door with my car parked out front

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Best regards to all of you and a Merry Christmas,
-Troy