Some 2017-2020 F-150 and 2018-2020 Expedition/Navigator vehicles built on or before 30-Nov-2019 and...

Bulletin number

TSB 23-2143

Component

Engine and engine cooling

Summary

Some 2017-2020 F-150 and 2018-2020 Expedition/Navigator vehicles built on or before 30-Nov-2019 and equipped with a 3.5L EcoBoost engine may exhibit a ticking/tapping or rattle type noise from the top front cover area of the engine on initial start-up after a cold soak of 6 hours or more that may last for 2-5 seconds. Some vehicles may also exhibit an intermittent condition with no auto restart during auto-start-stop operation with or without diagnostic trouble code (DTC) P164C present in the powertrain control module (PCM). This may be due to a worn variable camshaft timing (VCT) unit. To correct the condition, follow the Service Procedure to replace the VCT units.

Owners of these vehicles have filed 1,817 complaints in the engine category.