Torque Converter Clutch (TCC)

WARNING: This page is about a different car, the 2024 Ford Transit-350 HD, 2024 Ford Transit-350, 2024 Ford Transit-250, and 2024 Ford Transit-150. However, it is still accessible from the selected car via links, so may be relevant.

For torque converter operation, REFER to: Torque Converter .

Condition	Possible Sources	Action
TCC does not apply	TCC solenoid mechanically stuck OFF	INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) .
	TCC regulator valve stuck OFF	DISASSEMBLE, CLEAN and INSPECT the TCC regulator valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body
	TCC damper missing or damaged.	DISASSEMBLE, CLEAN and INSPECT the TCC damper. If the damper is missing or damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body
	Converter feed blow-off valve missing or damaged	DISASSEMBLE, CLEAN and INSPECT the converter feed blow-off valve. If the valve is missing or damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body
	CONV FD, MDA-TCC, APPLY, REL hydraulic circuit blocked or leaking	DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, blockage and leaks. CLEAN as necessary. REFER to: Main Control Valve Body
		REMOVE and INSPECT the front support assembly and input shaft Teflon seals for damage, blockage and leaks. REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Description and Operation). INSTALL new components as necessary. REFER to: Transmission
	TCC friction material worn or damaged	INSTALL a new torque converter. REFER to: Transmission
TCC always applied/stalls vehicle	TCC solenoid mechanically stuck ON	INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) .
	TCC priority valve stuck ON	DISASSEMBLE, CLEAN and INSPECT the TCC priority valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Transmission
	TCC regulator valve stuck ON	DISASSEMBLE, CLEAN and INSPECT the TCC regulator valve. If the bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body
	CONV FD, MDA-TCC, APPLY, REL hydraulic circuit cross leaks	DISASSEMBLE and INSPECT the main control valve body and separator plate passages for cracks, warping, and damage. If damage is found, INSTALL a new main control valve body. REFER to: Main Control Valve Body .
	CONV FD, MDA-TCC, APPLY, REL hydraulic circuit cross leaks	REMOVE and INSPECT the front support assembly and input shaft Teflon seals for damage, blockage and leaks. REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Description and Operation). INSTALL new components as necessary. REFER to: Transmission
	TCC friction material worn or damaged	INSTALL a new torque converter. REFER to: Transmission
TCC cycles, shudders or chatters	Incorrect transmission strategy programmed into the TCM	CARRY OUT the transmission strategy download and the adaptive learning drive cycle. REFER to: Transmission Strategy Download . REFER to: Adaptive Learning Drive Cycle
	TCC solenoid mechanically sticking	INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) .
	TCC priority valve sticking	DISASSEMBLE, CLEAN and INSPECT the TCC priority valve. If the bore, valve or spring is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body
	TCC Regulator Valve sticking	DISASSEMBLE, CLEAN and INSPECT the regulator valve. If bore or valve is damaged, INSTALL a new main control valve body. REFER to: Main Control Valve Body
	CONV FD, MDA-TCC, APPLY, REL hydraulic circuit blocked or leaking	DISASSEMBLE and INSPECT the main control valve body and separator plate passages for debris, blockage and leaks. CLEAN as necessary. REFER to: Main Control Valve Body
		REMOVE and INSPECT the front support assembly and input shaft Teflon seals for damage, blockage and leaks. REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission - 10R80, Description and Operation). INSTALL new components as necessary. REFER to: Transmission .
	TCC friction material worn or damaged	INSTALL a new torque converter. REFER to: Transmission