LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 1985 >> 626 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Operation >> Air Control Valves
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Air Control Valves

The air control valves are part of the air injection system. They help govern flow of secondary air to reed valves in air cleaner.

The No. 1 air control valve controls flow of secondary air to reed valve "A" according to intake manifold vacuum. If also supplies air when 3-way solenoid valve is on.

The No. 2 air control valve (Federal models only) is used in conjunction with No. 1 valve to control air flow to reed valve "A". No. 2 air control valve is vacuum actuated. The vacuum signal is controlled by an ACV solenoid valve which in turn is governed by the ECU.