Avenger 2008

Positive Crankcase Ventilation System

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PCV Valve



Operation

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

The PCV valve contains a spring loaded plunger. The plunger meters the amount of crankcase vapors routed into the combustion chamber based on intake manifold vacuum.

When the engine is not operating or during an engine backfire, the spring forces the plunger back against the seat. This prevents vapors from flowing through the valve.

When the engine is at idle or cruising, high manifold vacuum is present. At these times manifold vacuum is able to completely compress the spring and pull the plunger to the top of the valve. In this position there is minimal vapor flow through the valve.

During periods of moderate intake manifold vacuum the plunger is only pulled part way back from the inlet. This results in maximum vapor flow through the valve.

Removal & Installation
2.7L Engine

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

  1. Remove Positive Crankcase Ventilation (PCV) hose (3) from PCV valve (2).

    Click image to see an enlarged view

    Fig. Remove Positive Crankcase Ventilation (PCV) hose (3) from PCV valve (2)

  2.  
  3. Unscrew PCV valve (2) from valve cover (1).
  4.  

To install:

  1. Install Positive Crankcase Ventilation (PCV) valve to valve cover.
  2.  
  3. Install Positive Crankcase Ventilation (PCV) hose to PCV valve.
  4.  

3.5L Engine

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

  1. Remove Positive Crankcase Ventilation (PCV) hose (3) from PCV valve (2).

    Click image to see an enlarged view

    Fig. Remove Positive Crankcase Ventilation (PCV) hose (3) from PCV valve (2)

  2.  
  3. Unscrew PCV valve (2) from valve cover (1).
  4.  

To install:

  1. Install Positive Crankcase Ventilation (PCV) valve to valve cover.
  2.  
  3. Install Positive Crankcase Ventilation (PCV) hose to PCV valve.
  4.  

Testing

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


WARNING
Apply parking brake and/or block wheels before performing any test or adjustment with the engine operating.

  1. With engine idling, remove the hose from the PCV valve. If the valve is not plugged, a hissing noise will be heard as air passes through the valve. A strong vacuum should also be felt when a finger is placed over the valve inlet.
  2.  
  3. Install hose on PCV valve. Remove the make-up air hose from the air plenum at the rear of the engine. Hold a piece of stiff paper (parts tag) loosely over the end of the make-up air hose.
  4.  
  5. After allowing approximately one minute for crankcase pressure to reduce, the paper should draw up against the hose with noticeable force. If the engine does not draw the paper against the grommet after installing a new valve, replace the PCV valve hose.
  6.  
  7. Turn the engine off. Remove the PCV valve from intake manifold. The valve should rattle when shaken.
  8.  
  9. Replace the PCV valve and retest the system if it does not operate as described in the preceding tests. Do not attempt to clean the old PCV valve.
  10.  

 
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