Caravan died at end of 450 mile trip, in destination driveway (last mile was rough road, raining hard). Cranks, and will rev up, but stalls immediately when placed in any gear, forward or reverse. No engine trouble light, even when cranking, when it should light. ODB reader reads no codes whatsoever, even when artificial errors generated by unplugging sensors. Dealers phone advice was bad computer. Ordered, replaced, but no change whatsoever, and stiill no engine or service engine soon light on startup. Jacked front wheels off ground and they turn freely in neutral, but engine still stalls when placed in gear and wheels don't turn. 3.3L, 100K with rebuilt transmission 10K ago. Anyone have any suggestions?

Thanks.