NHTSA Complaint #11580413 — 2017 FORD EXPLORER

The transmission/torque converter has a chattering/shuttering issue in certain gears that causes the RPMs to jump and drop randomly causing unpredictable drivability, acceleration and deceleration. The SUV lurches forwards and backwards when the chattering occurs. There is no check engine light to indicate an issue with the powertrain. According to online forums, many other owners of 2016-2019 model year Ford Explorers experienced the same issues as I've described, with documented cases on YouTube of torque converters failing, and other owners being told by ford dealerships that the transmission assembly (including the torque converter) need to be replaced, with quotes from 3000$ to 8000$. My car in particular doesn't even have 130,000 miles yet and was purchased from a city surplus auction where the city maintained the car every 5000 miles or less and performed every recall and Customer Satisfaction Program. I myself have been quoted 2,600$ for a remanufactured replacement transmission and at-least 1000$ in labor for installation by a local mechanic. Temporary fixes performed by the previous owner included adding Lubeguard friction modifier to the transmission fluid which fixed the issue for a short period of time. This fix was performed 3 times before the dealer made them aware the vehicle needs a new transmission that wouldn't be covered under any existing recall or warranty. A damaged torque converter cannot simply be the only part replaced, since broken off friction material will cycle through the automatic transmission valve body and can damage the transmission, requiring an entire rebuild. Due to the location and tools required to access/replace the transmission, it makes it impossible for a home mechanic that can change their own oil, service their own brakes and perform basic maintenance on their vehicle to inspect, test, or diagnose their own torque converter/transmission. A powertrain, with regular maintenance should last the life of the vehicle.