TURNED ON CAR, ONCE WE PUT IT IN DRIVE, COULD GET NO FORWARD MOTION WITH ACCELERATION, MINIMAL FORWARD MOTIONS WHEN WE FLOORED IT. PUT THE CAR IN REVERSE AND THERE WAS A HEAVY KNOCK AND FELT LIKE THE ENGINE FELL OUT OF THE CAR. WE TURNED OFF THE CAR, WAITED A BIT AND TRIED AGAIN AND IT DROVE NORMALLY. THIS HAS HAPPENED A DOZEN OR SO TIMES, BUT RECENTLY OCCURRED AFTER I HAD BEEN DRIVING NORMALLY AND CAME TO A STOP AT A LIGHT. I TRIED TO ACCELERATE WHEN THE LIGHT TURNED GREEN BUT COULDN'T GO. I PUT THE CAR IN LOW GEAR AND IT MOVED SLOWLY FORWARD, THEN AFTER A BIT I SHIFTED IT BACK UP TO NORMAL AND THE GEAR ENGAGED AGAIN. SCARY IF YOU CAN'T MOVE WHEN NEEDED! I AM ALSO EXPERIENCING A CHUGGING WHEN I ACCELERATE TO ABOUT 40MPH... IT STUTTERS.. WHO KNOWS WHAT THAT IS! I TOOK THE CAR TO THE DEALERSHIP AND EXPLAINED MY PROB. AT ABOUT 55000 MILES... WHILE STILL UNDER WARRANTY... AND THEY TOLD ME THEY COULDN'T FIND A PROBLEM. I'M SURE THAT FORD KNOWS ABOUT THESE ISSUES. THE DECENT THING TO DO WOULD TO HAVE A RECALL AND FIX IT!! NISSAN DID FOR MY MURANO. MAYBE I'LL JUST GO BACK TO A NISSAN. *TR