Timing Concerns - Early/Late

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 - TIMING CONCERNS - EARLY/LATE

Possible Component	Reference/Action
211- ROUTINE
Powertrain Control System	CARRY OUT On-Board Diagnostic (OBD) tests. REFER to the INTRODUCTION article for diagnosis and testing of the PCM, APP sensor, IAT sensor and ECT sensor. For diagnosing of the tow/haul switch, REFER to AUTOMATIC TRANSMISSION EXTERNAL CONTROLS article. REPAIR as necessary. CLEAR the DTCs, ROAD TEST the vehicle and RERUN the OBD test.
PCM, vehicle wiring harnesses, transmission internal harness, tow/haul switch, Accelerator Pedal Position (APP) sensor, Intake Air Temperature (IAT) sensor, Engine Coolant Temperature (ECT) sensor, Four-Wheel Drive (4WD) switch
Some Shifts Early/Late Only
If only some shifts are early/late, determine which shift(s) is missing. REFER to the following routine(s) for further Soft/Slipping Shift concerns: Soft/Slipping 1-2 Shift, Routine 226 Soft/Slipping 2-3 Shift, Routine 227 Soft/Slipping 3-5 Shift, Routine 228 Soft/Slipping 4-6 Shift, Routine 229 Soft/Slipping 5-6 Shift, Routine 230 Soft/Slipping 6-5 Shift, Routine 231 Soft/Slipping 6-4 Shift, Routine 232 Soft/Slipping 5-3 Shift, Routine 233 Soft/Slipping 3-2 Shift, Routine 234 Soft/Slipping 2-1 Shift, Routine 235

Transmission Fluid
Incorrect level	CHECK transmission fluid level and adjust as necessary. REFER to PRELIMINARY INSPECTION in this service information. CARRY OUT the Transmission Fluid Condition Check. REFER to PRELIMINARY INSPECTION in this service information.
Condition
Incorrect Line Pressures	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/low pressures
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, reassemble correctly.
Solenoid damaged, stuck or bore damaged. Manual valve 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 assembly. INSTALL a new seal or pump assembly.
Control valves, springs or seals damaged, stuck or not assembled correctly
Overdrive Clutch Assembly
Seals, piston damaged	REPAIR as necessary.
Filtered orifice damaged, missing, not seating, off location	INSPECT for mislocation, poor seating, damage. INSTALL a new pump assembly if damaged.
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.
Intermediate Clutch Assembly
Seals, piston damaged	REPAIR as necessary.
Filtered orifice damaged, missing, not seating, off location	INSPECT for mislocation, poor seating, damage. INSTALL a center support assembly if damaged.
Friction elements damaged or worn	REPAIR as necessary.
Return springs damaged	REPAIR as necessary. REPAIR as necessary.
Snap ring for OWC and/or return spring not seated or 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	INSPECT for mislocation, poor seating, damage. INSTALL a new transmission case if damaged.
Friction elements damaged or worn	REPAIR as necessary.
Return springs damaged	REPAIR as necessary. REPAIR as necessary.
Snap ring for OWC and/or return spring not seated or damaged	REPAIR as necessary. REPAIR as necessary.