Other Concern: Noise/Vibration-Forward or Reverse

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

OTHER CONCERN: NOISE/VIBRATION-FORWARD OR REVERSE

Possible Component	Reference/Action
254 - ROUTINE
Powertrain Control System
PCM, vehicle wiring harnesses, Torque Converter Clutch (TCC) solenoid, Pressure Control Solenoids A, B, C	Carry out on-board diagnostic tests. See INTRODUCTION - GASOLINE article for diagnosis and testing of the PCM. GO to PINPOINT TEST A and GO to PINPOINT TEST D . Repair as required. Clear DTCs, road test and rerun on-board diagnostic test.
Shift Cable/Digital TR Sensor
Cable or digital TR Sensor damaged, misaligned	Inspect and repair as necessary. For additional information, refer to TRANSMISSION RANGE (TR) SENSOR ADJUSTMENT in this article.
Main Control
Screws not tightened to specification	Tighten to specification.
Separator plate damaged	Inspect for damage. If damaged, install a new separator plate.
Contamination	Disassemble and clean.
Valves/springs damaged, misassembled, missing, stuck, or bore damaged, thermostatic bypass valve damaged	If damaged or parts are missing, install new main control assembly. If misassembled, reassemble correctly. DO NOT stone, file or sand valves. This will remove the anodized finish and may result in further main control or transmission damage.
Filter damaged, missing	Inspect for damage, repair as necessary.
Fluid Pump Assembly
Screws not tightened to specification	Tighten screws to specification.
Gasket damaged	Inspect for damage. If damaged, install a new gasket.
Porosity, cross leaks, ball missing, plugged hole	Inspect for damage. If damaged, repair as necessary.
Pump gears cracked and/or seized	Inspect for damage. Install a new pump.
Flow control valves, springs or seals damaged, stuck or not assembled correctly	Inspect for damage. Install a new seal or flow control valve.
Low One-Way Clutch
Worn, damaged or assembled incorrectly	Inspect for damage. Repair as necessary.
Flexplate or Adapter Plate
Damaged	Inspect for damage. Repair as necessary.
Nuts not tightened to specification	Tighten to specification.
Adapter plate not aligned correctly	Remove transmission and using special service tool and procedure in this article, align adapter plate.
Clutch Assemblies
Seals, piston damaged	Inspect for damage. Repair as necessary.
Check ball damaged, missing, not seating, off location	Inspect for damage, mislocation, poor seating. Install a new cylinder as necessary.
Friction elements damaged or worn.	Inspect for damage. Repair as necessary.
Return springs damaged	Inspect for damage. Repair as necessary.
Torque Converter Assembly
Torque converter hub damaged	Inspect for damage. Repair as necessary.