Diagnostic Routine 211/311 - Shift Concerns: Timing - Early/Late

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

SHIFT CONCERNS: TIMING - EARLY/LATE

Possible Component	Reference/Action
211 - ELECTRICAL ROUTINE
Powertrain Control System
	Carry out shift point road test. Refer to SHIFT POINT ROAD TEST and carry out torque converter operation test. Refer to TORQUE CONVERTER DIAGNOSIS .
Electrical Inputs/Outputs, Vehicle Wiring Harnesses, Powertrain Control Module (PCM), Shift Solenoids (SSA, SSB, SSC), TP, MAF, OSS, IAT, ECT, TFT, Internal Wire Harness, EPC Solenoid	Run On-Board Diagnostic. Refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE for diagnosis. Go To PINPOINT TEST A: SHIFT SOLENOID , Go To PINPOINT TEST B: TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR , or Go To PINPOINT TEST E: ELECTRONIC PRESSURE CONTROL (EPC) SOLENOID . Refer to PINPOINT TESTS - NON OSC EQUIPPED VEHICLES .
311 - HYDRAULIC/MECHANICAL ROUTINE
Other
Tire size, chain ratio - change	See the specification decal and verify vehicle has original equipment. Changes in tire size and chain ratio will affect shift timing.
Fluid
Incorrect level	Adjust the fluid to the correct level.
Shift Linkage
Damaged, out of adjustment	Inspect. Repair as required. Verify linkage adjustment. Refer to SELECTOR LEVER CABLE ADJUSTMENT . After adjusting the linkage, verify the digital TR sensor is correctly adjusted. Refer to TRANSMISSION RANGE (TR) SENSOR ADJUSTMENT .
Main Controls
Bolts out of torque specification	Tighten bolts to specification.
Gaskets and Separator Plate - damaged, off location	Inspect for damage. Install new as required.
Valves, Accumulators, Seals, Springs, Clips - damaged, missing, misassembled	Inspect for damage and contamination. Repair as required.
	See the appropriate shift concern for further diagnosis:
	Shift Concern: Soft Shift 1-2 - ROUTINE 226/326
	Shift Concern: Soft Shift 2-3 - ROUTINE 227/327
	Shift Concern: Soft Shift 3-4 - ROUTINE 228/328
	Shift Concern: Soft Shift 4-3 - ROUTINE 229/329
	Shift Concern: Soft Shift 3-2 - ROUTINE 230/330
	Shift Concern: Soft Shift 2-1 - ROUTINE 231/331
Front Support - Driven Sprocket
Seals - damaged	Inspect for damage. Install new as required.
Holes - blocked	Inspect for damage. Repair as required.
Planetary Gear Sets
Damaged	Inspect for damage. Repair as required.
One-Way Clutch Assembly
Damaged	Inspect for damage. Repair as required.
Other Components
Clutches	Inspect for damage. Install new as required.
Output Shaft (Differential)	Inspect for damage. Repair as required.
Overdrive Band	Inspect for damage. Repair as required.
Powerflow Components	Inspect for damage. Repair as required.
Front Support - Driven Sprocket
Seals - damaged	Inspect for damage. Install new as required.
Holes - blocked	Inspect for damage. Repair as required.
Vehicle Speed Input
Insufficient, erratic or no input received by the PCM from the OSS sensor.	Inspect. Repair as required. Go To PINPOINT TEST G: OUTPUT SHAFT SPEED (OSS) SENSOR .
Filter and Seal Assembly
Plugged, missing	Inspect. Repair as required.
Apply and Release Fluid Tubes
Damaged, missing	Inspect for damage. Repair as required.
Seal or O-ring - damaged	Inspect for damage. Install new as required.