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Home >> Dodge and Ram >> 1988 >> Caravan Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> Operation >> Relief Valve

Relief Valve

Relief valve is to control maximum air pump pressure at high engine speeds. When discharge pressure exceeds approximately 9 psi, relief valve opens to vent excess air pressure to atmosphere. See Fig 1 .

Fig 1: Sectional View of Relief Valve
G72737Courtesy of CHRYSLER MOTORS.