Okay, I have gone out and looked at the viehicle and have some actual first hand info to add. First off, the previous owner who has it now siad it ran fine before but the trans was slipping, the van is also a 92, not a 91. He replaced the trans with a rebuilt unit and once he was done he noticed that the engine would run down the road fine but will not idle without feathering the gas the whole time to keep it going. He then installed a new carquest fuel pump and filter, which made no improvement. He then replaced the throttle body with an identical unit from another 4.3 engine that was working fine. When that did not help he replaced the distributor, plugs, wires, cap, and rotor and the computer with new parts. The thing is great once it gets moving, just will not stay running like it loads up and stalls out when idling.