My picture is correct. pin 1 is the right most pin looking at the front of the sensor. It is the pin with the notch in it. That is probably your problem. It is kind of odd because I am used to pin 1 being the left most pin on most IC packages. With the engine off and key on it should measure 0 psi. and remeber that the 36.3 psi rating is absolute pressure - you need to subtract 14.4 to convert it to guage which gives you around -14 to 21psi range. Idle should be around -13 to -14 or so.
cbatters - I agree with your assesment. Just didn't want to post it because I wasn't sure if I would be talking out of my ass.
sam