I think testing this guy would be very difficult,because this is sensing the engine temperature. I just read the documents in the CD and thought this was the perfect candidate for my temperature related problems. I had a tough time to remove it, and infact I broke the sensor's contacts trying to remove them. So there was the clue, the car ran no different with the sensor cables disconnected. The next time I took it to my mechanic, I took the sensor with me and he replaced it for me. The problem of hot start and stalling was immediately gone. Now I never have to depress my pedal to start the car when it is hot.
Hope this helps.
Saumil S. Patel