Does it randomly cut out for a second or less while driving? My 2010 Fusion SEL 3.0 started this behavior, along with the occasional stall at any stop. An irregular occurence no rhyme or reason. After about 3 or so months, finally got a check engine light, code for the crankshaft sensor. Got one at the local Ford dealer, about 50 bucks. Installed it, car runs like new which it always had before this issue. Never would have suspected this part. Sensor is located above rear of oil pan. Not saying this is your issue but tracing down intermittents is damn near impossible.