runs rich

1999 Ford Explorer Starts and then dies after you put it in gear. If you let it idle after 10 minutes it dies . Water drips heavily from exhaust pipe. replaced 2- O2 sensers,fuel pump, fuel filter , spark plugs , DPFE sensor , and flushed fuel injection system. None of this has helped . This is being done at a Ford dealer they have had my vehicle for 4 weeks . I also paid them $1200. up front.
I dont know whats going to happen!