Poor Vehicle Performance
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.
Check for poor engine performance. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Road test vehicle. See ROAD TEST under PERFORMANCE TESTS. Check torque converter clutch operation. See TORQUE CONVERTOR ENGAGEMENT TEST under SELF-DIAGNOSTIC SYSTEM. Retrieve and record DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST) under SELF-DIAGNOSTIC SYSTEM. Perform TEST A: SHIFT & TCC SOLENOIDS , TEST B: TFT SENSOR and TEST C: DIGITAL TRANSMISSION RANGE SENSOR under DIAGNOSTIC TESTS. Repair as necessary. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES . Perform TRANSMISSION DRIVE CYCLE TEST under SELF-DIAGNOSTIC SYSTEM. Repeat QUICK TEST. Ensure DTCs are not present.