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Air Throttle Body Assembly

The air throttle body assembly controls air flow to engine through a single or a double butterfly valve. An air by-pass valve controls both cold and warm engine idle speed. This air by-pass valve assembly is mounted to the air cleaner (2.3L engine), upper intake manifold (2.9L engine), or throttle body on all other engines. The by-pass valve assembly is an electro-mechanical device controlled by EEC-IV module.