No Creep
WARNING: This page is about a different car, the 2001 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
Check ATF fluid level and condition, selector lever and shift cable adjustment, valve body, shift control valve, forward clutch, reverse clutch, oil pump, forward one-way clutch (sprag), low one-way clutch, low/reverse clutch, torque converter, 3-4 clutch and line pressure solenoid.