Some 2005-2013 Lincoln Navigator vehicles equipped with a 5.4L 3V engine may exhibit an intermittent rattle noise while driving from idle up to 1200 rpm with the engine at operating temperature. In severe cases, a rough idle and DTCs P0022, P0021, P0340 and/or P0341 may be stored in the PCM.

Replace the left and right variable cam timing (VCT) solenoids. Refer to workshop manual section 303. VCT solenoids are available as P/N 8L3Z-6M280-B. Replace gaskets as well.

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Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

About the Author

Mike Mavrigian | Editor

Mike received a BA degree from Youngstown State University in English Literature with a minor in Journalism in 1975.