Ford Mustang Service Manual: Torque Converter (Description and Operation)

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


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

    Geartrain
    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:

    Symptom Chart
    Bearing Whine Bearing whine is a high-pitched sound similar to a whistle. It is usually caused by worn/damaged pinion bearings, which are operating at driveshaft speed. Bearing noise occurs at all driving speeds. This distinguishes it from gear whine which ...

    Engine Ignition (Description and Operation)
    Engine Ignition (Description and Operation) Eight separate ignition coils (12029): are mounted directly above each spark plug (12405). are controlled by the powertrain control module (PCM) for correct firing sequence. The spark plug: changes t ...

    Cleaning the windows and wiper blades
    The windows and wiper blades should be cleaned regularly. If the wipers do not wipe properly, substances on the vehicle’s glass or the wiper blades may be the cause. These may include hot wax treatments used by commercial car washes, water repellent coat ...