The contact owns a 2018 Ford Expedition. The contact stated that while starting the vehicle, the engine made an abnormal sound. The check engine warning light was illuminated. Additionally, the vehicle failed to accelerate intermittently while driving. The vehicle was taken to the dealer, who related the failure to Customer Satisfaction Program: 21N03 (Cam Phaser Replacement); however, the VIN was not included. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 140,000.