Turn on the ignition but don't crank. Work the gas pedal. Does the TB respond? You'll hear it.
Drain oil into a clean pan and swish a magnet around in it. Anything that shouldn't be there?
Disconnect the blower and turn it back and forth by hand. Does it feel ok? Anything other than buttery smooth is a problem.
I'm at a loss. Might be time to troubleshoot per the service manual, Techstream and all.
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Decay107? Anyone else care to chime in?