On sept. 29,2014i approached stop light and applied brakes, engine rpm increased very high and brakes would not hold vehicle - had to put it in neutral and engine rpm continue to go higher - this lasted for about 10 seconds before engine went back to idle speed then we proceeded home with no more problems. this has done this several times before and each time brakes would not hold vehicle back. i took it to ford in 2013 and explained it to them and they said to put gas stabilizer in tank as the gas in tank was condensing and causing the computer to malfunction. i put the gas stabilizer in thinking this would take care of it but this time , sept. 29,2014 and the time before, june 2014 - it rev up slightly , it could not be the case these last two times as i had just put fresh gas in it. it is very scary it could have caused a bad accident. now i am afraid to drive it. i am going to call ford and see what they have to say this time. *tr