Torque Converter Clutch (TCC)
For torque converter operation,
REFER to: Torque Converter (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Description and Operation).
Condition | Possible Sources | Action |
TCC does not apply | TCC solenoid mechanically stuck OFF |
INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). |
TCC priority valve stuck OFF |
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
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TCC friction material worn or damaged |
INSTALL a new torque converter. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission - 3.0L Power Stroke Diesel (307-01D) . |
|
TCC always applied/stalls vehicle | TCC solenoid mechanically stuck ON |
INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). |
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: Main Control Valve Body (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
||
TCC friction material worn or damaged |
INSTALL a new torque converter. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission - 3.0L Power Stroke Diesel (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures). REFER to: Adaptive Learning Drive Cycle (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, General Procedures). |
TCC solenoid mechanically sticking |
INSTALL a new TCC solenoid. REFER to: Shift Solenoids (SS) (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Main Control Valve Body - Vehicles With: Mechanical Shift (307-01D) . |
|
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 (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Overhaul). |
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TCC friction material worn or damaged |
INSTALL a new torque converter. REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission (307-01 Automatic Transmission - 10-Speed Automatic Transmission – 10R80, Removal and Installation). REFER to: Transmission - 3.0L Power Stroke Diesel (307-01D) . |
Check
NOTE: Wheel-to-hub optimization is important. Clearance between the wheel and hub can be used to offset or neutralize the Road Force® or run-out of the wheel and tire assembly. For every 0.001 inch of wheel-to-hub clearance, the Road Force® can be affected between 1 and 3 pounds depending on the tire stiffness.
NOTE: The example below illustrates how the clearance between the wheel and the hub can be used to offset the high spot of radial run-out or Road Force®. Following the procedure will make sure of the best optimization.
Position the wheel and tire assembly on the vehicle so that the high spot location of radial run-out or Road Force® is at the 6 o'clock position and