AutoZone 1989 Mercury Colony Park 5.0L FI 8cyl | Repair Guides | Engine Performance & Emission Controls | Components & Systems | Positive Crankcase Ventilation System | AutoZone.com

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    Explorer, Mountaineer 2008-2009

    Positive Crankcase Ventilation System

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    PCV Valve



    Location

    Specific to:

    Ford Explorer 2008-2009

    Ford Explorer Sport Trac 2008-2009

    Mercury Mountaineer 2008-2009



    Click image to see an enlarged view

    Fig. PCV valve location-4.0L Engine

    For 4.6L engine, the PCV valve is located on the LH valve cover.

    Operation

    Specific to:

    Ford Explorer 2008-2009

    Ford Explorer Sport Trac 2008-2009

    Mercury Mountaineer 2008-2009

    The PCV system consists of the breather tube and the PCV valve. The breather tube connects the crankcase to a contained fresh air source such as the air cleaner. Air passes into this tube and into the engine after being filtered through a spark arrestor screen in order to prevent a the possibility of an explosion within the engine in the case of a backfire.

    Removal & Installation

    Specific to:

    Ford Explorer 2008-2009

    Ford Explorer Sport Trac 2008-2009

    Mercury Mountaineer 2008-2009

    1. Disconnect the PCV valve electrical connector (if necessary).
    2.  
    3. Disconnect the PCV valve hose.
      NOTE
      If the PCV valve is removed from the valve cover, a new PCV valve must be installed.

    4.  
    5. Rotate the PCV valve counterclockwise and remove it from the valve cover.

      Click image to see an enlarged view

      Fig. PCV valve location-4.0L Engine

    6.  

    To install:

    1. To install, reverse the removal procedure
    2.  

     
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