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Home >> Isuzu >> 1987 >> Trooper II Base, 2D Utility, 2.2 U >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Operation >> Air Switching Valve
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Air Switching Valve

The air switching valve directs air from air injection pump into exhaust port. Air switching valve is controlled by ECM during closed loop operation. ECM opens air switching valve when coolant temperature is below a certain level or for a period of time after carburetor is operated at wide open throttle.

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