Ford Mustang Service Manual: Diagnosis By Symptom

Transmission Description (Description and Operation)

The 4R70W has the following features:

  • Wide ratio gears
  • Four speeds
  • Rear wheel drive
  • Automatic
  • Electronic shift
  • Torque converter clutch control
  • Line pressure controls

The transmission uses Ravigneaux-style double-pinion gearset with two bands, one one-way roller clutch, one mechanical diode and four friction clutches to produce four forward gears and Reverse.

4R70W Automatic Transmission

Identification Tags


    Transmission Fluid Cooler
    Transmission Description (Description and Operation) The 4R70W has the following features: Wide ratio gears Four speeds Rear wheel drive Automatic Electronic shift Torque conver ...

    Transmission Fluid Cooler - Backflushing and Cleaning
    Transmission Description (Description and Operation) The 4R70W has the following features: Wide ratio gears Four speeds Rear wheel drive Automatic Electronic shift Torque conver ...

    Other materials:

    Electronic Pressure Control (EPC) Solenoid
    Transmission Description (Description and Operation) The 4R70W has the following features: Wide ratio gears Four speeds Rear wheel drive Automatic Electronic shift Torque converter clutch control Line pressure controls The transm ...

    Symptom Chart
    Inspection and Verification 1. Verify the customer concern by operating the engine to duplicate the condition. 2. Visually inspect for obvious signs of mechanical damage. Refer to the following chart. Visual Inspection Chart Mechanical ...

    Parking Brake (Diagnosis and Testing)
    Parking Brake (Description and Operation)   The parking brake system is cable-actuated and controlled by an independent hand-operated parking brake control (2780). To apply parking brake, pull parking brake control upward as far as possible. The par ...