Lincoln Navigator Has a Rattle

Some 2018-2019 Lincoln Navigator vehicles built on or before April 8, 2019, may exhibit a ticking/tapping or rattle noise from the front cover area of the engine on initial startup after a cold soak of 6 hours or more that may last for 2-5 seconds. 

This may be due to a worn variable cam timing (VCT) unit. To correct the condition, replace the VCT unit and update the PCM calibration with revised VCT parameters. Replace all four VCT units.

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Information courtesy of Mitchell 1

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.