Cruise Control problems of the 2008 Ford Taurus

Over the past two months, (this has happened twice) while driving my 2008 Ford Taurus, the gas peddle stuck to the floor. It was almost like it accelerated as if I was resuming the cruise control button, however, I wasn't using my cruise at the time. I ended up riding the breaks for awhile until I finally had to put the car in neutral and turn the key off. When I turned the car back on it was still stuck. I physically had to reach down and pull the peddle up off the floor. The second time that it happened it did the same thing but then it quit after I turned the key off.

The vehicle was traveling at 70 mph with cruise control on, in heavy traffic. I tapped the brake pedal to release the cruise control and the vehicle lost all electrical power and stalled in the right hand lane of the interstate. Several commercial vehicles had to make a sudden stop to avoid a collision. The vehicle had to be pushed off the interstate. The local Ford dealership performed a standard computer diagnostic test and informed us that the computer was unable to locate a reason for this complete loss of power. We contacted the Ford customer service division and were advised to continue operating the vehicle until the problem recurred. In the event of another loss of power we were advised to have the vehicle towed to a dealership so the problem could be investigated.

Driving on highway from milwaukee WI, to oshkosh, WI. After driving around an hour at freeway speed with cruise control set at 70, car suddenly accelerated on its own and rpm went up too. Took car off of cruise control and continued driving. The car did it again after a few minutes, accompanied by a loud 'thunk' noise. Immediately got off freeway, turned off car and waited till driving again. Problem did not reoccur then. But happened again next day on way home. Since then it has occurred numerous times. Generally only happens on long trips at freeway speeds after driving about an hour to hour and a half. We do not use cruise control any more, but it still happens on every long trip. Have taken to dealership and contacted Ford. They don't see any service codes so nothing has been fixed.

At 62k my 2008 Taurus x began having "surging" issues while what was first felt at high way speeds. It almost felt as if I was driving with somebody that had the bad habit of pressing down on the gas and letting off continuously, only I knew this was not the case for it was myself driving. It was worse when the cruise control was engaged. The problem did not occur everytime driven but the frequency began to increase. One day I turned the car on and you could hear the surging in the idling and see it in the tachometer. This day I was coming to a stop with my foot on the brake and the entire car lurched forward causing me to almost rearend the car in front of me. Once stopped I stepped on the gas to pull forward from the stop and the car would not go although my foot was pressed down on the gas pedal. I continued to drive the car home and while accelerating up a hill the car was waiting until about 3500 rpms to shift - almost like it was slam shifting and bucking until I got to cruising speed at the top. My car is now at the Ford dealerships and has been for 3 days. I have been told it was not throwing any error codes but Ford head quarters had been involved and once they placed a certain code into my car others came up. Right now I am waiting for the throttle body to be replaced - or so I have been told.