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Dual EGR Valve

California Pickup, Federal Pickup with 2.6L engine and Federal Montero models are equipped with dual EGR valve systems. The dual EGR consists of primary and secondary valves controlled by carburetor vacuum. Carburetor vacuum is governed by throttle openings. The primary valve controls EGR flow at small throttle openings. The EGR secondary valve controls the EGR flow at large throttle openings.