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Looking at your latest log, you start with your IAC around 150 steps which is pretty far open, and your TPS voltage at 0.235V which means the throttle blades are very far if not completely closed. Just to rule this out, when you adjusted the TPS voltage, you were physically moving the TPS around to change the voltage, and not using the throttle plate adjusting screw to change the TPS voltage? As long as the TPS voltage is less than 1.0V at key on and more than 4.50V at WOT, your PCM shouldn't really care what the voltage is. It just sets 0%TPS to whatever the voltage is at key on.
The latest log, the engine was a little warm, 85 or so I think it said.
I was rotating the TPS itself.
Thanks for confirming that. You said you've done the IAC min air adjustment several times, but have you tried just adjusting the throttle plates so that you get around 15 steps on the IAC at idle? It's something easy to try, and it's free.
Have you checked the stock pressure regulator for leaking raw fuel into the throttle bore(s)? I ran into that once upon a time, Standard Motor Products used to market a reseal kit for the regulator which caused me to think that it wasn't an isolated case.
That would be with the IAC fully extended and unplugged?
.030 over increases displacement by 5 cubic inches. Totally inconsequential.