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Other Concern: Noise/Vibration-Forward or Reverse

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. 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, TCC solenoid, pressure control solenoids A, B, C
Shift Cable/Digital TR Sensor   
  • Cable or digital TR Sensor damaged, misaligned
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 or 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 nuts to specification.
  • Adapter plate not aligned correctly
  • Remove transmission and, using special service tool and procedure in this article, align adapter plate.
Torque Converter Assembly   
  • Damaged
  • Remove transmission. Inspect for damage. Refer to TORQUE CONVERTER . If the torque converter fails to pass the checks or is damaged, install a new or remanufactured torque converter.
Clutch Assemblies   
  • Seals, piston damaged
  • Inspect for damage. Repair as necessary.
  • Check ball damaged, missing, not seating, off location
  • Inspect for mislocation, poor seating, damage. Install a new cylinder.
  • Friction elements damaged or worn
  • Inspect for damage. Repair as necessary.
  • Return springs damaged
  • Inspect for damage. Repair as necessary.
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