YEs thats about right.

The best way that ALWAYS works for me is to unplug the TPS and loosen the retaining screws to a point where the TPS sits where it wants to under its own spring pressure.
Then tighten the screws and reconnect it.

On a L6 (2wd) system, the voltage should sit around 4.7 volts or more at idle and go down to about 0.3 volts at full throttle.

On a L8/P8 (4wd) system, the voltage should sit around 0.3 volts at idle and go up to about 4.6 volts at full throttle.

If the car is running right idling and acceration wise, The chances are the monitor has a fault or the wiring to it is faulty.