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:
Gear (Removal and Installation)
Special Tool(s)
Teflon Seal Replacer Set
211-D027 (D90P-3517-A) or
Equivalent
Tie Rod End Remover
211-001 (TOOL-3290-D)
Removal
1. Turn the steering wheel as necessary to position the wheels in the
straight-ahead position. Do
not loc ...
Diagnosis By Symptom
Special Tool(s)
Transmission Fluid Pressure
Gauge
307-004 (T57L-77820-A)
Air Test Plate, Transmission
307-246 (T92P-7006-A)
Breakout Box, EEC-V Control
System
418-049 (T94L-50-EEC-V) or
equivalent
MLP- ...
Principles of Operation
The speed control system is designed to maintain vehicle speed above 48 km/h
(30 mph). After the
ON switch is depressed, depressing the SET/ACCEL switch will activate the speed
control servo. To
increase a set speed, either depress and hold for continuous ac ...
