Description & Operation

The function of the ventilation system is to divert blow-by gases into the intake manifold to be burned by the engine. The system consists of a positive crankcase ventilation valve and connecting hoses.

The system on 2.3L engines is closed by venting the filler cap to the crankcase. Ventilating air is routed into the rocker cover from the air cleaner, then to the ventilation valve. The valve meters air to the intake manifold.

During idle, when manifold vacuum is high, the valve is pulled closed, limiting air flow to the intake manifold. During normal operation, the valve is open and allows a full flow of ventilating air to flow into intake manifold.