Jeep Wagoneer/Commando/Cherokee 1984-1998

Idle Relay and Solenoid



The idle relay is energized by the MCU to control the vacuum actuator portion of the Sole-Vac throttle positioner by providing a ground for the idle relay. The relay energizes the idle solenoid, which allows vacuum to operate the Sole-Vac vacuum actuator. This, in turn, opens the throttle and increases engine speed. The idle solenoid is located on a bracket on the left front inner fender panel and can be identified by the red connecting wires.