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:
Principles of Operation
Evaporative Emission (EVAP) Canister Purge Valve
The EVAP canister purge valve is controlled by the powertrain control
module (PCM). The EVAP
canister purge valve controls the flow of fuel vapors from the EVAP canister
to the engine intake
manifold duri ...
Climate Control System (Description and Operation)
WARNING: To avoid accidental deployment and possible injury, the air
bag system
backup power supply must be depleted before repairing any climate control
components. To
deplete the backup power supply, disconnect the battery ground cable and wait
one minute ...
Disc Check
Special Tool(s)
Brake/Automobile Brake Drum
System with Vacuum
164-R3622 or equivalent
Dial Indicator/Magnetic Base
100-D002 (D78P-4201-B) or
equivalent
WARNING: Dust and dirt present on wheel brake and clutch assemblies may
...
