Intermittent Rattling Noise While Driving? – UnderhoodService

Intermittent Rattling Noise While Driving?

All affected vehicles typically have a 5.4L 3-valve engine.


  • FORD
  • 2004-2010 F-150
  • 2005-2010 F-250, F-350
  • 2005-2013 Expedition
  • 2006-2008 Mark LT
  • 2005-2013 Navigator
  • NOTE: All affected vehicles have the 5.4L 3-valve engine


Vehicles equipped with 5.4L 3-valve engine may exhibit an intermittent rattle noise while driving from idle up to 1,200 rpm when the engine is at operating temperature. In severe cases, a rough idle and diagnostic trouble codes (DTCs) P0022, P0021, P0340, and/or P0341 may be stored in the powertrain control module (PCM).


Replace the left and right variable cam timing (VCT) solenoids. 

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