Harsh Reverse Engagement
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 Mercury Grand Marquis, 2002 Lincoln Town Car, 2002 Ford Crown Victoria, 2001 Mercury Mountaineer, and 2001 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
Fluid level and condition, shift linkage, high line pressure, high Electronic Pressure Control (EPC) pressure, oil filter (plugged), valve body (No. 6 shuttle ball, No. 5 check ball, manual valve, main regulator valve), incorrectly tightened valve body bolts, reverse servo, pump assembly, reverse clutch assembly or low/reverse band.