Fuel pump is in the tank on the chrysler mini-vans. have to drop the tank to access the pump. there is no inertia switch on dodge and chrysler products. Could have a problem with the fuel pump relay , believe it is under hood in the fuse box.
If the vehicle receives a substantial jolt from a collision or perhaps hitting a bad pothole , the inertia switch will trip and open the electrical circuit so that no power gets to the electric fuel pump - it's a safety device . If the switch trips it has to be reset manually by pressing the button down that is located on the top of the switch