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Home >> Toyota >> 1988 >> 4Runner Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Mixture Control System >> Description
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Mixture Control System: Description

This system controls emissions of HC and CO during sudden deceleration. This is accomplished through a Mixture Control (MC) valve, located in air cleaner. MC valve directs fresh air into intake manifold when sudden deceleration (closed throttle) occurs.