A word of caution on the pressure sensor/transducer. There are basically two now - the metal can sensor (1999 and prior 4 pin plug) and the 2000 and later plastic body (with 4 blade connector). They have different operating resistances - mix them up and you have trouble. The temperature side I believe is where the differences are - i believe the control side are the same 5V feed, etc. You mention gov. pressure sensor voltage - when you pull the plug - 70 psi sounds about right - you can't have more gov psi than line psi. If you spin the engine higher on the stand and line pressure rises this gov. psi should too - the purpose of this default pressure is to put the trans in default and launch in 3rd gear to make it driveable - you should still be able to do a manual shifter pull down and launch in 1st gear.
