Toyota Cressida and Van 1983-1990

Identification

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An identification plate is usually located on the side of the transmission with the model and serial number stamped on the plate. Should a transmission be found without an identification plate, examine the case for identifying code letters or digits. Also, obtain the vehicle model and serial number before obtaining replacement parts.

The 1983-85 Cressida uses the A-43DL transmission. This transmission is a 4 speed automatic transmission which incorporated a lock-up torque converter. This converter automatically engages in 3rd gear to provide a 1 to 1 gear ratio. The lock-up torque converter also eliminates any slippage between the engine and the transmission. This action improves fuel economy whenever the lock-up converter is engaged.

The 1986-87 Cressida uses the A-43DE transmission. This transmission is a 4 speed automatic transmission which incorporated a solenoid that is electronically controlled which permits a more precise control of the shift points and torque converter lock-up operation. It will also allow improved response to road changes, engine conditions, driver demands and will improve fuel economy.

The 1988-90 Cressida uses the A-340E transmission. This transmission is a 4 speed automatic transmission which is controlled by selecting the appropriate position from a console mounted selector lever mounted on the passenger compartment floor with a push button overdrive control switch. A power/economy switch is included to further increase the driveability of the vehicle. The on board computer determines the shift and lock-up points of the transmission as well as the speed change range of the transfer system based upon the input data signals received from various sensors.

The 1984-86 Van uses the A-44DL transmission. This transmission is a 4 speed automatic transmission which incorporated a lock-up torque converter. This converter automatically engages in 3rd gear to provide a 1 to 1 gear ratio. The lock-up torque converter also eliminates any slippage between the engine and the transmission. This action improves fuel economy whenever the lock-up converter is engaged.

The 1987-89 Van use a A-45DL transmission on the 2WD models and the A-45DF transmission on the 4WD models. These units are 4 speed automatic transmissions with a lock-up mechanism built into the torque converter. The basic difference in the 2 units is that the A-45DF unit as a transfer case for the 4WD drive train attached to the rear of it.

On all electronically controlled transmissions, the computer system measures the vehicle speed and angle of the fuel injection throttle valve. These measurements are then fed to the electronically controlled transmission computer where they are analyzed. The computer then selects the best gear and shift speed to match the driving conditions. The computer also monitors engine temperature, brake pedal position, shift lever position and the shift pattern select switches which are located either on the shift lever or the dash panel. This monitoring allows for slight modifications in the shifting program.

The on board computer which controls the operation of the electronically controlled automatic transmission on the basis of the accelerator pedal opening angle and vehicle speed, will automatically shift the transmission in the gear best suited for any given driving condition.

 
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