I am having a low type horn/hum noise on it seems like the passenger side of my 2014 ecoboost. It has 16k miles. I just noticed it as it has gotten colder (is it the cold doing it?) its kinda random, but usually only last a second or two around 1500 to 2000 RPM in 2nd and 3rd gears. It sounds really similar to those 2 ft long plastic blow horns at soccer or football games that people have. It was a little louder when I was towing 7000# last weekend, but only happened twice off stop lights. Please help a otherwise very happy Ecoboost owner! Is this a problem? Thanks so much.