NHTSA Complaint #11433682 — 2016 FORD TRANSIT

While on a road trip with my 6 kids, I had a brake issue with my 2016 Ford Transit. The first time it happened, I was driving about 55 mph, hit the brakes and the engine revved & accelerated. I pumped the brakes, engine stopped revving. Honestly thought I did something wrong. Same thing happened again two days later. I stopped and cleaned the sensors hoping that would resolve the issue. The next day the same thing happened making it hard to stop. I went straight to Ford and had two Ford dealerships tell me the vehicle was fine. Brakes were checked and was told no problems. I asked if it could be a leak in brake booster and was told no. No lights were coming on. I took the van to Les Schwab and was told the same thing. Unsure what to do, my brother came to the rescue and took the van. He started driving it home to California from Colorado. I rented an RV and continued our road trip. 80 miles later, the engine on the van made a loud bang and ceased. No engine lights. My brother said the engine started having acceleration problems so he stopped and checked all of the fluids. Everything was fine and engine was not overheated. But, complete engine failure at 79,000 miles. This was July. Since then, we paid to have a new engine installed. My husband flew out to pick up the van and new engine started having problems. He had to fly back home. Ford has said that the new engine is bad so they are paying for rental car and getting another new engine installed. Still do not have van. It's been three months. My concern is something else is going on...just seems extremely strange. I am still worried about the braking and revving bit and wonder if anyone else has had a similar issue.