Operation CHARM
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Pontiac
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1988
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6000 V6-191 3.1L
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Repair and Diagnosis
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Powertrain Management
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Ignition System
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Distributor
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Distributor Vacuum Control
Distributor Vacuum Control
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Description and Operation
Distributor Spark Vacuum Modulator Valve (DS-VMV)
Distributor Spark Vacuum Regulator Valve (DS-VRV)
Distributor Vacuum Modulator Valve (DVMV)
Distributor Vacuum Solenoid Valve (DVSV)
Testing and Inspection
Distributor Vacuum Modulator Valve (DVMV)
Vacuum Reducer Valve (VRV)
