Shift Concerns: 3-4 Shift (Automatic)

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

SHIFT CONCERNS: 3-4 SHIFT (AUTOMATIC)

Possible Component	Reference/Action
222 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, OSS, transmission control switch (TCS)	Carry out Self-Test. REFER to the INTRODUCTION - GASOLINE article for diagnosis and testing of the Powertrain Control System. GO to PINPOINT TEST A or GO to PINPOINT TEST E . Repair as required. Clear DTCs, road test and repeat Self-Test.
Engine driveability concerns	Refer to Routine 253.
322 - HYDRAULIC/MECHANICAL ROUTINE
Shift Linkage, Digital TR Sensor
Damaged or incorrectly adjusted	Inspect and repair as required. Verify transmission shift cable adjustment. Refer to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS . Adjust transmission shift cable as necessary. After repairing transmission shift cable, verify that the digital TR sensor is correctly adjusted. Adjust the digital TR sensor as necessary. Refer to TRANSMISSION RANGE (TR) SENSOR ADJUSTMENT .
Incorrect Pressures
Forward clutch pressure, direct clutch pressure, line pressure	Check line, direct and forward clutch pressures at appropriate taps. Refer to the CLUTCH PRESSURE TEST for specifications. If pressures are out of specification, check main controls.
Main Controls
3-4 shift valve, solenoid pressure regulator valve, OD servo regulator, 3-4 capacity modulator valve, 1-2 and 2-3 shift valves stuck, damaged or assembled incorrectly	Inspect for damage. Repair as required.
Bolts not tightened to specifications	Tighten bolts to specifications.
SSA or SSB malfunction	Activate solenoid using diagnostic tool. If solenoid operation cannot be felt when placing hand on solenoid, install a new solenoid. Inspect O-rings for damage. Repair as required.
Gaskets damaged	Inspect for damage and install a new gasket.
OD servo rod and piston cushion spring or seals damaged	Inspect for damage. Repair as required.
Worn or damaged OD servo anchor pins	Inspect for damage. Repair as required.
No. 2, No. 4, No. 7 and No. 9 check balls damaged or missing	Inspect for damage. Repair as required.
Solenoid screen blocked or damaged	Clean or install a new screen.
Pump
Porosity/cross leaks, balls missing, damaged or leaking	Inspect for porosity/leaks, balls missing. Install a new pump as required.
Gaskets damaged	Inspect for damage. Install new gaskets as required.
OD Band
OD band and reverse clutch drum assembly damaged, worn or assembled incorrectly	Inspect for damage. Repair as required.
Intermediate one-way clutch assembly damaged	Inspect for damage. Repair as required.
Forward Clutch Assembly
Seals or piston damaged	Inspect for damage. Repair as required.
Friction elements worn or damaged	Inspect for damage. Repair as required.
Check ball stuck, damaged or not seating correctly	Inspect for damage. Repair as required.
Input Shaft
Seals damaged	Inspect for damage. Repair as required.