oldsmobile Workshop Repair Guides

Oldsmobile Workshop Service and Repair Manuals

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Hall Effect Switch <--> [Hall Effect Sensor, Ignition] > < Distributor Vacuum Delay Valve (DVDV)|Page 2155

Cutlass Ciera FWD L4-151 2.5L (1982)

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Vacuum Spark Delay Valve: Testing and Inspection
Distributor Vacuum Modulator Valve (DVMV)

 
OPERATION

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When manifold or ported vacuum is less than 8.7 inches, the DVMV switches to full manifold vacuum. 

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When manifold or ported vacuum is greater than 8.7 inches Hg, the DVMV switches to the higher of the two.

Hall Effect Switch <--> [Hall Effect Sensor, Ignition] > < Distributor Vacuum Delay Valve (DVDV)|Page 2155