Arthur,

I have preformed the tests as described. The results are as follows (this is assuming the 3-wire plug :black, brown and green, on the harness side is the correct plug, there is also a heavier guage green wire that I assumed to be the heater circuit). The green seemed to stay about 12.7 to 13.5v and the brown seemed to be a ground (-). So, I assumed the black to be the signal lead which was .07 to .08v under all circumstances of the fuel pressure reg. disconnect (with vac line plugged) as well as the created vac leak of a disconnected SOVs. So, I am now assuming the engine has a lean condition created by a stuck EGR? I think I'm on the right track here but let me know if you think I am backwards? Thanks again for the help thus far.

Dan