Hey all, new to fords and the forum. So a few years back I got the wife a 2009 ford expedition limited. 4x4 all stock. Got it with 48k miles. It now has just over 100k. She has it serviced at the local ford. Last time we took an hour trip I was driving and noticed on the interstate at 70 mph or so it felt like the brakes were being tapped every once in a while. I thought the cruise was just overactive. I shut the cruise off and it still does it. It feels just like you covered the brake with the gas pedal constant. Like a light brake check. It's getting worse now. The rpms dont seem to drop. Feels like the transmission to me. Anyone noticed this before?