Shift Concerns: 1-2 Shift (Automatic)

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

SHIFT CONCERNS - 1-2 SHIFT (AUTOMATIC)

Possible Component	Reference/Action
220 - ELECTRICAL ROUTINE
Powertrain Control System
Electrical inputs/outputs, vehicle wiring harnesses, PCM, shift solenoids, OSS	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.
Poor engine performance	Refer to Routine 253.
320 - 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.
Incorrect Pressures
Intermediate clutch pressure, line pressure	Check pressure at line and intermediate clutch taps; see LINE PRESSURE CHART for specifications. If not OK, check the main controls.
Main Controls
1-2 shift valve, stuck or damaged	Inspect for damage. Repair as required.
Bolts not tightened to specifications	Tighten bolts to specification.
Shift solenoid SSA 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.
Gasket damaged	Inspect for damage and install a new gasket.
No. 8 ball not seating	Inspect for damage. Repair as required.
Case
1-2 accumulator stuck or damaged	Inspect for damage. Repair as required.
Pump
Porosity/cross leaks, balls missing, damaged or leaking	Inspect for porosity/leaks, balls missing. Install a new pump as required.
Gasket damaged	Inspect for damage and install a new gasket.
Intermediate Clutch Assembly
Seals damaged	Inspect for damage. Repair as required.
Piston damaged	Inspect for damage. Repair as required.
Friction elements damaged or worn	Inspect for damage. Repair as required.
Intermediate One-Way Clutch Assembly
Not holding or damaged	Inspect for damage. Repair as required.
Planetary One-Way Clutch Assembly
Not overrunning or damaged	Inspect for damage. Repair as required.
1-2 Accumulator
Damaged accumulator piston	Inspect for damage. Repair as required.
Springs damaged or broken	Inspect for damage. Repair as required.
Case bore scored	Inspect for damage. Repair as required.