The AODE/4R70W transmission has been produced since 1992 and is used in a wide variety of Ford/Lincoln/Mercury cars and light trucks. The hydraulic pressure system is modulated through the use of a electronic pulse width modulated solenoid (EPC), as opposed to a cable or vacuum modulator. The compound planetary geartrain in the AODE is identical in construction and ratio to the AOD, while the 4R70W has a wide ratio gearset installed. Its powerflow is also similar, except that a torque convertor lockup clutch replaces the direct driven lockup from the AOD. Since it shares the compound planetary arrangement with the AOD, the same Lentech patented Reverse/Third powerflow can be applied in select models. ( Strip Terminator )
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