I just finished changing the transmission filter and put in the 4 quarts of fluid in a 1991 Explorer with a 4.0. Now it will not go into any gear. The fluid level is too high on the dipstick but 4 quarts was from the Haynes manual. It acts like the pump isn't picking up the prime. Hopefully someone here can give me a clue. I tried the search method and found nothing. Have a happy Thanksgiving!