my 2000 v10 excursion is starting to skip or sputter... on 2000 Ford Excursion

i dont know what the deal is you can have it in park and rev. the motor up and it wont do it put when you put it in gear it will start skipping is it possibly the trans is starting to go out or a sensor or something like that

Asked by for the 2000 Ford Excursion
ignition coils on each spark plug may have one or more going bad
Thanks for the there anywas to test each one other than taking it to the shop....