Sidekick L4-1324cc 1.3L SOHC 5 Carb 8V (1989)
Thermostatic Air Cleaner Vacuum Switch: Description and Operation
This system, consisting of an Air Control Actuator (ACA) and a thermo sensor (Thermo Valve), controls the temperature of the intake air by mixing
preheated air and cool air to improve fuel vaporization and engine warm-up operation. The thermo sensor senses the inside temperature of the air cleaner
and regulates the vacuum applied to the air control actuator, thus controlling the damper position.