{"nhtsa_id":10177121,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-07-08","date":"2020-06-05","document_id":"TSB 20-2166","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY","mfr_system":null,"summary":"Some 2018-2019 Expedition/Navigator vehicles built on or before 8-Apr-2019 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. This may be due to a worn variable cam timing (VCT) unit. To correct the condition, follow the Service Procedure steps to replace the VCT units and update the powertrain control module (PCM) calibration with revised VCT parameters.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10177121-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10177121-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10177121","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"EXPEDITION","year_from":2018,"year_to":2019,"match":"exact","vehicle_ids":["2018_ford_expedition","2019_ford_expedition"]},{"make":"LINCOLN","model":"NAVIGATOR","year_from":2018,"year_to":2019,"match":"exact","vehicle_ids":["2018_lincoln_navigator","2019_lincoln_navigator"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}