Genuine Ford Expedition PCV Valve

Ford Expedition PCV Valve Parts Questions & Answers

• Valve Assembly - Regulating
  F7UZ-6A666-CA
  Q: What is the purpose of the Positive Crankcase Ventilation (PCV) system and PCV Valve on Ford Expedition?

  A: The Positive Crankcase Ventilation (PCV) system reduces hydrocarbon emissions by circulating fresh air from the air cleaner, mixing with blow-by gases, and rerouting through a PCV valve. The PCV system consists of a PCV valve, a fresh air-filtered inlet, and vacuum hoses, and the PCV valve is meant to restrict flow to maintain idle quality. On 2005 and later Expedition/Navigator models, an electric heating element is added to the PCV system.
• Valve Assembly
  2L3Z-6A666-AA
  Q: How to check the PCV Valve on Ford Expedition?

  A: To sustain the efficient operation of a PCV system, it must be kept clean and its hoses checked according to the maintenance schedule. First, start the engine then disconnect the PCV valve from the intake manifold and check for vacuum. You will feel a vacuum if it is working properly. If there isn't any vacuum remove the hose to see if there is one inside it. Replace the valve if the hose has suction but not the valve itself. Find out whether a hose is blocked or broken by checking for suction at its ends. Inspect the grommet for damage and replace it as necessary. Clean and inspect the hose ensuring a snug fit. Install a new PVC valve as may be necessary.