Ford Mustang (1999-2004) Service Manual: 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

Automatic Transaxle/Transmission
General Specifications
a - MERCON V is not interchangeable at this time with the current MERCON
fluids. Check the
transmission fluid level indicator to determine the correct fluid and refer to
the ...
Identification Tags
All vehicles are equipped with a Vehicle Certification Label, located
on the driver side door lock post.
For correct transmission identification, refer to the code in the space
marked TR.
...
Other materials:
Engine Ignition (Description and Operation)
The ignition coil (12029), which is mounted on the upper intake manifold, can
be described as a coil
pack containing three separate coil units. Each coil unit is individually
controlled by the powertrain
control module (PCM) (12A650) through separate wire le ...
Assembly
1. Using the special tool, install the front pump seal assembly.
2. Install the clutch piston seals.
1. Install the intermediate clutch piston outer seal.
2. Install the intermediate clutch piston inner seal.
3. NOTE: Coat the intermediate clutch pist ...
Hill start assist
WARNING: The hill start assist feature does not replace the
parking brake. When you leave the vehicle, always apply the
parking brake and shift the transmission into position P for automatic
transmission or position 1 for manual transmissions.
WARNING: You mus ...
