Torque Converter Clutch Operation Concerns: No Apply

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

TORQUE CONVERTER CLUTCH OPERATION CONCERNS - NO APPLY

Possible Component	Reference/Action
240 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, PCM, torque converter clutch (TCC) solenoid, TFT sensor, OSS	Carry out self-test. Refer to the INTRODUCTION - GASOLINE article for diagnosis and testing of the Powertrain Control System. GO to PINPOINT TEST B or GO to PINPOINT TEST E . Repair as required. Clear codes, road test and repeat self-test.
340 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage
Damaged or incorrectly adjusted	Inspect and repair as required. Verify transmission shift cable adjustment; refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS . Adjust transmission shift cable as necessary. After repairing transmission shift cable, verify that the digital TR sensor is correctly adjusted. Adjust the digital TR sensor as necessary.
Incorrect Pressures
Low line pressure, low EPC pressure	Check pressure at line and EPC taps; refer to LINE PRESSURE CHART for specifications. If pressure is low, check EPC and main regulator valve. If within specifications, check the main controls.
Main Controls
Solenoid pressure regulator valve, manual valve, bypass clutch control valve and plunger, converter pressure limit valve, drain back valve stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
Bolts not tightened to specifications	Tighten bolts to specifications.
Solenoid screen blocked or damaged	Clean or install a new screen.
TCC solenoid malfunction	Activate solenoid using diagnostic tool. If solenoid operation cannot be felt when placing hand on solenoid, install a new solenoid. Inspect O-rings for damage. Repair as required.
Gaskets damaged	Inspect for damage and install a new gasket.
Pump Assembly
Bolts not tightened to specifications	Tighten bolts to specifications.
Porosity/cross leaks, balls leaking	Inspect for porosity/leaks, ball missing. Install a new pump as required.
Gaskets damaged	Inspect for damage and install a new gasket.
Input Shaft
Seals damaged	Inspect for damage. Repair as necessary.
Torque Converter Assembly
Leakage, friction material damaged, internal seals damaged	Inspect torque converter. Repair or install a new or remanufactured torque converter as required.