FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Mercury
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1986
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Cougar/XR7 V6-232 3.8L
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Air Injection
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Air Injection Control Valve
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Description and Operation
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Air Control Valve
Air Control Valve
The Air Supply Control Valve is used In the Thermactor (secondary air) System.
The air control valve directs air pump output to the exhaust manifold or downstream to the catalyst system depending upon the engine control strategy.