Chrysler Full-Size Vans 1989-1998 Repair Guide

PCV Valve


A Positive Crankcase Ventilation (PCV) system is used to prevent pollutants (blow-by gases) from being released into the atmosphere. The PCV system supplies fresh air to the crankcase through the air cleaner. The fresh air mixes with the gases and is passed through the PCV valve to the intake manifold. The gases are then reburned in the combustion process. The PCV system should be inspected every 60,000 miles (96,000 km).

For more information on the Positive Crankcase Ventilation (PCV) system, please refer to Driveability & Emission Controls of this guide.


See Figures 1 and 2

  1. Disconnect the ventilation hose from the PCV valve.
  3. Remove the valve from the valve cover.
  5. Inspect the valve cover grommet and replace as necessary.
  7. Install the PCV valve in the valve cover.
  9. Connect the ventilation hose to the valve.

Click image to see an enlarged view

Fig. Fig. 1: The PCV valve is located on the passenger side valve cover. The hose comes from a nipple located on the intake manifold

Click image to see an enlarged view

Fig. Fig. 2: Remove the PCV valve by pulling it up out of the valve cover and twisting it out of the hose