Harsh 2-3 Shift

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC ROUTINES - HARSH 2-3 SHIFT

Possible Component	Reference/Action
237 - ROUTINE
Powertrain Control System
PCM, vehicle wiring harnesses, transmission internal harness, transmission pressure control solenoid SSPC-B, SSPC-C, TCC solenoid, TSS/Intermediate shaft speed sensor, OSS sensor, TFT sensor	Carry out on-board diagnostic tests. See INTRODUCTION - GASOLINE article or INTRODUCTION -- 6.0L DIESEL article for diagnosis and testing of the PCM.
	GO to PINPOINT TEST A , GO to PINPOINT TEST B and GO to PINPOINT TEST D .
	Repair as necessary. Clear DTCs, road test and rerun on-board diagnostic test.
Fluid
Condition	Carry out Fluid Condition Check. Refer to PRELIMINARY INSPECTION .
Incorrect Pressures
High 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.
SSPC-B, SSPC-C, 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.
Overdrive 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 drum.
Friction elements damaged or worn	Inspect for damage. Repair as necessary.
Return springs damaged	Inspect for damage. Repair as necessary.
Snap ring for OWC and/or return spring not seated or damaged	Inspect for damage. Repair as necessary.
Intermediate 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 pump if damaged.
Friction elements damaged or worn	Inspect for damage. Repair as necessary.
Return springs damaged	Inspect for damage. Repair as necessary.
Snap ring for OWC and/or return spring not seated or damaged	Inspect for damage. Repair as necessary.