calibrated new TPS this evening, removed old throttle body, and found that it has been disconnected for years. the contacts in the plug were green with corrosion. supposedly this engine was swapped in from a 4wd 5speed, but there is no dashpot.......I imagine he just didnt know it was unplugged. Now I have a clean throttle body, with a new sensor. van starts and runs better than ever, just need to replace coolant temp sensor, and reset my timing and i think it will be great. Thanks Tim!