Harsh Forward Only

WARNING: This page is about a different car, the 2011 Ford F550 Super Duty and 2011 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC ROUTINES - HARSH FORWARD ONLY

Possible Component	Reference/Action
204 - ROUTINE
Powertrain Control System	CARRY OUT On-Board Diagnostic (OBD) tests. REFER to the INTRODUCTION article for diagnosis and testing of the PCM. REPAIR as required. CLEAR the DTCs, ROAD TEST the vehicle and RERUN the OBD test.
PCM, external vehicle wiring harnesses, transmission internal harness
Selector Lever Cable	INSPECT and REPAIR as necessary. REFER to AUTOMATIC TRANSMISSION EXTERNAL CONTROLS article.
Cable system damaged, misaligned
Incorrect Line Pressure	CHECK pressure at line tap. CARRY OUT Line Pressure Test. REFER to SPECIAL TESTING PROCEDURES in this service information. FOLLOW the pressure diagnosis test as required.
High pressure
Solenoid Body Assembly
Bolts not tightened to specification	TIGHTEN to specification.
Filter gasket damaged	INSTALL a new filter gasket.
Contamination	DISASSEMBLE and CLEAN. If damaged or parts are missing, INSTALL a new solenoid body assembly. If misassembled, correctly reassemble.
Solenoids damaged, stuck or bore damaged. Manual valve or solenoid damaged, stuck or bore damaged
Fluid Pump Assembly
Bolts not tightened to specification	TIGHTEN to specification.
Gasket damaged	INSTALL a new gasket.
Porosity, cross leaks, cup plug missing, plugged hole	REPAIR as necessary.
Pump gears and/or gear pocket damaged	INSTALL a new pump. REPAIR as necessary. If damaged, INSTALL a new seal or pump assembly.
Control valves, springs or seal damaged, stuck or not assembled correctly
Forward Clutch Assembly
Seals, piston damaged	REPAIR as necessary.
Friction elements damaged or worn	REPAIR as necessary. REPAIR as necessary.
Return springs damaged	REPAIR as necessary. REPAIR as necessary.
Low/Reverse Clutch Assembly
Seals, piston damaged	REPAIR as necessary.
Filtered orifice damaged, missing, not seating, off location	INSTALL a new case.
Friction elements damaged or worn	REPAIR as necessary.
Return springs damaged	REPAIR as necessary. REPAIR as necessary.
Snap ring for One-Way Clutch (OWC) and/or return spring not seated or damaged	REPAIR as necessary. REPAIR as necessary.