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Home >> Dodge and Ram >> 1988 >> Grand Caravan LE >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> Operation >> Coolant Vacuum Switch Cold Open (CVSCO)
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Coolant Vacuum Switch Cold Open (CVSCO)

CVSCO is mounted in thermostat housing. CVSCO provides manifold vacuum to air switching system after cold start and until coolant temperature reaches a predetermined temperature. When predetermined temperature is reached, CVSCO closes and vacuum is cut off from air switching system.

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