Accelerator Pedal problems of the 2018 Ford Edge

The contact owns a 2018 Ford Edge. The contact stated that while driving at low speeds, the vehicle began to buck when the accelerator pedal was depressed. The vehicle was slow to respond when the accelerator pedal was depressed. There were no warning lights illuminated. The vehicle was taken to an independent mechanic, who informed the contact to use two bottles of fuel cleaner. The mechanic was unable to duplicate the failure.   the vehicle was taken to the local dealer, where it was diagnosed that the torque converter needed to be replaced. The contact was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 75,000. The VIN was not available.