TCC Cycling, Shudder, Chatter

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC ROUTINES - TCC CYCLING, SHUDDER, CHATTER

Possible Component	Reference/Action
252 - ROUTINE
Powertrain Control System
PCM, vehicle wiring harnesses, transmission internal wiring harness, line pressure control solenoid PC-A, TCC, BPP, ECT sensors, tow haul switch.	Carry out on-board diagnostic tests. See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL articles for diagnosis and testing of the PCM. GO to PINPOINT TEST A and GO to PINPOINT TEST E . Repair as necessary. Clear DTCs, road test and rerun on-board diagnostic test.
Incorrect Pressures
High/low TCC pressures	Check pressure at line tap. Carry out Line Pressure Test. Refer to SPECIAL TESTING PROCEDURES .
Solenoid Body Assembly
Bolts not tightened to specification	Tighten to specification.
Filter gasket damaged	Inspect for damage. If damaged, install a new filter gasket.
Contamination	Disassemble and clean.
PC-A, TCC solenoid(s) damaged, stuck or bore damaged. Manual valve damaged, stuck or bore damaged	If damaged or parts are missing, install a new solenoid body assembly. If misassembled, reassemble correctly.
Fluid Pump Assembly
Bolts not tightened to specification	Tighten to specification.
Gasket damaged	Inspect for damage. If damaged, install a new gasket.
Porosity, cross leaks, cup plug missing, plugged hole	Inspect for damage. If damaged, repair as necessary.
Pump gears and/or gear pocket damaged	Inspect for damage. Install a new pump.
Control valves, converter charge limit valve, converter pressure regulator valve springs, or seals damaged, stuck or not assembled correctly	Inspect for damage. Install a new seal or pump assembly.
Torque Converter
Internal components failure	Remove transmission. Inspect for damage. Carry out torque converter checks, refer to TORQUE CONVERTER . If torque converter fails to pass checks or is damaged, install a new or remanufactured torque converter.