Harsh Forward and Harsh Reverse

WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC ROUTINES - HARSH FORWARD AND HARSH REVERSE

Possible Component	Reference/Action
208 - ROUTINE
Powertrain Control System
NOTE: The battery being disconnected or a PCM (gasoline engines), Transmission Control Module (TCM) (diesel engines), reprogramming will cause firm engagements. PCM (gasoline engines), Transmission Control Module (TCM) (diesel engines), external vehicle wiring harnesses, transmission internal harness, Pressure Control Solenoid A (PCA), Torque Converter Clutch (TCC) solenoid, Turbine Shaft Speed (TSS)/intermediate shaft speed sensor, Transmission Fluid Temperature (TFT) sensor and Transmission Range (TR) sensor, Intake Air Temperature (IAT) sensor, Engine Coolant Temperature (ECT) sensor, Power Take-Off (PTO)	Carry out On-Board Diagnostic (OBD) tests. Refer to the INTRODUCTION - GASOLINE MODELS for diagnosis and testing of the PCM. If the battery has been disconnected or the PCM has been reflashed, carry out the engagement schedule update. For gasoline engines, GO to PINPOINT TEST A , GO to PINPOINT TEST B , GO to PINPOINT TEST C , GO to PINPOINT TEST D and GO to PINPOINT TEST E . For diesel engines, GO to PINPOINT TEST F , GO to PINPOINT TEST G , GO to PINPOINT TEST H , GO to PINPOINT TEST I and GO to PINPOINT TEST J . Repair as necessary. Clear the DTCs, road test and rerun OBD test.
Transmission Fluid
Incorrect level	Check transmission fluid level and adjust as necessary. Refer to PRELIMINARY INSPECTION .
Condition	Carry out Transmission Fluid Condition Check. Refer to PRELIMINARY INSPECTION .
Selector Lever Cable
Cable system damaged, misaligned	Inspect and repair as necessary. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS .
Incorrect Line Pressures
High pressures	Check pressure at line tap. Carry out Line Pressure Test. Refer to SPECIAL TESTING PROCEDURES . Follow the pressure diagnosis test as required.
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.
PCA , TCC solenoid(s) damaged, stuck or bore damaged. Manual valve damaged, stuck or bore damaged. Blowoff valve 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, springs or seals damaged, stuck or not assembled correctly, blowoff valve damaged	Inspect for damage. Install a new seal or pump assembly.
Low/Reverse Clutch Assembly
Seals, piston damaged	Inspect for damage. Repair as necessary.
Filtered orifice damaged, missing, not seating, off location	Inspect for mislocation, poor seating, damage. Install a new case.
Friction elements damaged or worn	Inspect for damage. Repair as necessary.
Return springs damaged	Inspect for damage. Repair as necessary.
Snap ring for One-Way Clutch (OWC) and/or return spring not seated or damaged	Inspect for damage. Repair as necessary.