KICKDOWN SWITCH & DOWNSHIFT SOLENOID

Except 626

NOTE: The kickdown switch is located on the accelerator linkage above the pedal.

1. Check the accelerator linkage for smooth operation.
2. Turn the ignition ON, but do not start the engine.
3. Depress the accelerator pedal fully to the floor. As the pedal nears the end of its travel, a light click should be heard from the downshift solenoid.

   Fig. 1: Kickdown switch and downshift solenoid adjustment

4. If the kickdown switch operates too soon/too late, loosen the locknut on the switch shaft. Adjust the shaft so that the accelerator linkage makes contact with it when the pedal is depressed approximately ⁷⁄₈ of the way to the floor. Tighten the locknut.
5. If the switch is operating properly, check the solenoid by listening as an assistant depressed the pedal. If no noise comes from the solenoid, check the solenoid wiring and the switch.
6. If the circuit is in good condition, remove the wire from the solenoid and connect it to a 12V DC power source. If the solenoid does not click when connected, it is defective and should be replaced.

   NOTE: When the solenoid is removed, about two pints of transmission fluid will leak out; have a container ready to catch it. Remember to add more fluid to the transmission after installing the new solenoid.

626

1. Disengage the wiring connectors from the kickdown switch.
2. Unscrew the kickdown switch a few turns.
3. Fully depress the accelerator pedal.
4. Gradually thread in the kickdown switch until you hear a clicking sound then tighten it inward ¹⁄₂ turn more.
5. Tighten the locknut and attach the wiring connectors.