I hope someone can tell me what is going on with my truck. It is a 2005, F250, FX4 with a 6.0 stock engine that has just rolled over 100000 miles. It started idling up & dropping when I would be at a stop with no hesitating at take off & ran well. I would have to make sure I had the brakes on or it would surge forward when this would happen. It is a intermitting problem but starting to happen more often. (I have changed the fuel filters thinking that might be the problem but it hasn't) This has been going on for about a month, it is now starting to do this riding down the road, you can see the RPM guage moving up and down irregular, just starting to do this. Not sure where to look first! Your help would be appreciated!
2005 F250 FX4