- Ford AOD transmission
Infobox Automobile
name=AOD
aka=AODE
AOD-EW/4R70W
production=1980 –present
manufacturer=Ford Motor Company
related=E4OD
class=4-speed longitudinalautomatic transmission
predecessor=Cruise-O-Matic
C-5
successor=6R
similar=GM 4L60-E/4L65-E
Chrysler A-727The AOD (for automatic overdrive) was a four-speedautomatic transmission withoverdrive . Introduced in 1980, it was Ford's first four-speed automatic overdrive transmission. The design is based on the same gearset as the Ford FMX transmission of the 1960s and 1970s. The AOD replaced the majority of Ford's older transmissions, including theCruise-O-Matic and C5.Applications:
* 1980–1986Ford LTD
* 1980–1993Ford Thunderbird
* 1980–1993Mercury Cougar
* 1980–1993Ford Mustang
* 1980–1986Mercury Marquis
* 1980–1987Lincoln Continental
* 1980–1983 Lincoln Mark VI
* 1983–1990Ford Econoline
* 1983–1991Ford LTD Crown Victoria
* 1983–1992Mercury Grand Marquis
* 1982–1993Ford Bronco
* 1980–1990Lincoln Town Car
* 1980–1987Lincoln Continental
* 1980–1983 Lincoln Mark VI
* 1984–1992Lincoln Mark VII
* 1992Ford Crown Victoria Gear ratios
* First: 2.40:1
* Second: 1.47:1
* Third: 1.00:1
* Overdrive: 0.67:1
* Reverse: 2.00:1AODE
The AOD was redesigned with electronic controls in 1991, becoming the AODE. It was mainly intended for the new Modular
V8 at first, but it was also adapted to the old AOD bell-housing for vehicles still powered by OHV engines. While the AOD and AODE/4r70w share some basic components like oil pans, gear sets (AODs and AODE can be retrofit with 4r70w gear sets), most of the internals are not interchangeable. The transmissions are not interchangeable either, as the AOD only uses a throttle valve cable for operation. The AODE and 4r70w are controlled by the Powertrain Control Module (PCM) also sometimes referred to as the Electronic Engine Control (EEC). Applications:
* 1991–1994Lincoln Town Car
* 1993–1994Ford Crown Victoria
* 1993–1994Mercury Grand Marquis
* 1994–1995Ford Mustang 4R70W
A revised version of the AODE was released in 1993 with the
Lincoln Mark VIII . 4R70W stands for 4 gears, Rearwheeldrive, 70x10=700 ftlb load capacity at the output of the torque converter and Wide gear ratio. It has lower 1st and 2nd gear ratios for better take-off acceleration and improved gearset strength. On vehicles powered by a 5.4 L V8, a stronger gearset is used than in normal duty 4R70Ws. In 1998, due to durability concerns, the intermediate one-way roller clutch was replaced with a mechanical diode providing extra holding capacity and longer service.The gear ratios are:1st: 2.84 :12nd: 1.55 :13rd: 1.00 :14th: 0.70 :1Rev: 2.23 :1
Applications:
** 1993–1998Lincoln Mark VIII
** 1993–2003Ford F-Series
** 1994–1997Ford Thunderbird
** 1995–1998Lincoln Mark VIII
** 1995–2004Ford Crown Victoria
** 1996–2001Ford Explorer
** 1993–2004Lincoln Town Car
** 1994–1997Mercury Cougar
** 1995–2004Mercury Grand Marquis
** 1997–2004Ford Expedition
** 1997–2001Mercury Mountaineer
** 1996–2004Ford Mustang With all the new components added to the 4R70w since 1993, Ford decided to designate newer transmissions with the name 4R75W so that an older transmission would not be used in the newer vehicles.
The most practical modification for the 4R70W is the [http://www.tccoa.com/articles/tranny/transmission/index.shtml J-mod] . It is a shift kit specified by one of the Ford engineers that designed the transmission. It offers quicker shifting, smoother operation, and increased service life. All parts can be bought at Ford dealers for less than $60.
A 20,000+ GVW cooler is highly recommended with or without a shift kit. Breakdown of the friction modifier in the fluid often results in "converter shudder" (feels like driving over rumble strips) where converter tries to lock up, but slips.
4R7xx Usage
2002
* 4R70W used in all applications2003
* 4R75W used in Mercury Marauder, V8 Mustang (GT and Mach 1), and 5.4 L trucks (F150, Van, and Expedition)
* 4R70W used in all other applications (V6 Mustang, 4.6 L Van, 4.2 L F150, 4.6 L F150, and Crown Vic/Grand Marquis/Towncar)2004
* 4R75E used in 5.4 L-3v F150
* 4R70E used in 4.6 L F150 (except F150 Heritage)
* 4R75W used in Mercury Marauder, V8 Mustang (GT and Mach 1), and 5.4 L-2v trucks (Van, and Expedition)
* 4R70W used in all other applications (V6 Mustang, 4.6 L Van, 4.6 L Expedition, Crown Vic/Grand Marquis/Towncar, and F150 Heritage).2005
* 4R75E used in 5.4 L trucks (F150, Van, and Expedition)
* 4R70W used in F150 Heritage (sold only in Mexico)
* 4R70E used in all other applications (4.6 L Van, Crown Vic/Grand Marquis/Towncar, and 4.6 L F150 (except F150 Classic (sold only in Mexico))2006 to 2008
* 4R70W used in F150 Heritage (sold only in Mexico)
* 4R75E used in all other applications (Van, Crown Vic/Grand Marquis/Towncar, and F150 (except F150 Heritage (sold only in Mexico))ee also
*
List of Ford transmissions
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