Operation CHARM
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Mercury
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1982
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Grand Marquis V8-255 4.2L
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Repair and Diagnosis
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Powertrain Management
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Air Injection
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Air Injection Control Valve
Air Injection Control Valve
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Description and Operation
Air Supply Control Valves
Combination Air Bypass/Air Control Valves
Differential Valve Delay Valve (DVDV)
Thermactor Vacuum Vent Valve
Vacuum Differential Valve (VDV)
Testing and Inspection
Air Supply Control Valves
Thermactor Vacuum Vent Valve
Vacuum Differential Valve (VDV)
Technical Service Bulletins
