oldsmobile Workshop Repair Guides

Oldsmobile Workshop Service and Repair Manuals

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Vacuum Modulator Check Valve (Vm-CV) <--> [Vacuum Restrictor] > < Transmission Controlled Spark System|Testing and Inspection

Toronado V8-307 5.0L (1982)

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Vacuum Advance Control Solenoid: Description and Operation

This switch has a check valve that holds the highest manifold vacuum reached to the distributor vacuum advance until switching occurs at the
specified coolant temperature. After the valve switches, unchecked vacuum is directed to the distributor, to give better engine operation.

Vacuum Modulator Check Valve (Vm-CV) <--> [Vacuum Restrictor] > < Transmission Controlled Spark System|Testing and Inspection