Engine Exhaust System problems of the 2016 Ford F-250

While operating in below freezing temperatures on the highway, the diesel exhaust fluid (def) tank heater failed, allowing the def to freeze inside the tank. With the def frozen, it was not able to be injected into the exhaust resulting in higher levels of nitrogen oxides (nox) to be released into the atmosphere through the vehicles exhaust.

Tl the contact owns a 2016 Ford F-250. While driving at an unknown speed, the vehicle decelerated to 50 mph and would not exceed 50 mph. The vehicle was taken to an independent mechanic who diagnosed that the heater for the diesel exhaust fluid was faulty and needed to be replaced. The vehicle was not repaired. Baytown Ford (4110 I-10, baytown, TX) was notified of the failure. The manufacturer was not notified. The failure mileage was 82,000.

Engine runs rough during exhaust regen. Typically when driving between 55-65, the diesel exhaust fluid warning appears. Almost a minute later the truck begins to make loud jack hammer noise and loses power. Feels very unsafe as you lose power for about 10 seconds.