To be honest I was fairly certain it was the tps, I just didnt expect it to be such a ridiculous beeyotch to get to. I mean it is deceptively visible, like RIGHT THERE, but you can't do anything with the dang thing till you pull that other crap.
It couldn't be the tach sensor. You know, the part that's right in friggin front of the motor just begging to be serviced. NOOOooooo, it's gotta be the one under the air cleaner, tucked up right next to the fuel filter that's in the way, that you can't remove unless you pull the lines, and unbolt its mount, and pull its wires, and and and. Grrr.