Tempo L4-140 2.3L HSC (1986)
Carburetor Solenoid: Description and Operation
Carburetor Feedback Solenoid - YFA
This solenoid assembly is an integral part of the YFA feedback carburetors
In a feedback system, it operates as a pulse width modulated (dithering) solenoid, varying the air bled into the idle and main fuel metering circuits, in
response to commands from the MCU or EEC, thereby varying the fuel/air ratio delivered to the engine.
