PCV System

The PCV system consists of the following:

• PCV valve
• Hoses

The PCV system uses intake manifold vacuum to ventilate the crankcase and return the fumes to the intake manifold for combustion.

The PCV valve:

• controls the amount of ventilating air and blow-by gases going to the intake manifold.
• is integral to the LH valve cover on the 4.6L (3V) engine. If a new PCV valve must be installed, a new valve cover must be installed on a 4.6L (3V) engine. Refer to ENGINE - 4.6L (3V) .