I'm (slowly) working my way through a very poor idle situation with my '94 4R with the 3vze, and when I tested the TPS per the FSM it failed. Okay, no problem. I'll just get a replacement, right?

The first replacement was a Beck/Arnley from RockAuto. No matter where I put the sensor, I couldn't get the idle reading below 2.3k ohms. It wanted to hover around 5.86 or so, or infinity.

The second replacement came from ToyotaPartsDeal, an OEM Denso unit. It too failed, with the idle reading somewhere in the 4.88 range.

The third replacement was another Beck/Arnley, this time from Advance Auto. Failed same as the first two and in the same range for IDL-E2.

I've gone over my throttle body with a fine-toothed comb looking for interference between the throttle stop screw and arm, and I've adjusted the stop screws (opener, throttle stop, and dashpoint) to where they no longer make contact with the relevant arms. I've cleaned the throttle body butterfly plate and the throat, both of which are now spotless.

Is it possible that I got three bad sensors in a row?