Hyundai Santa Fe Engine hesitates during acceleration

We have a 2011 Santa Fe 2.2 automatic and having issues with it hesitation when driving between 35-60, its not go any worse but does it a lot, docent come up with any error codes on computer and docent seem to lose any power. I only does it when you are asking to go forward but won't do it when you are just causing in gear. Has anyone had anything like this ? its been to two garages now and both don't know what it is and I don't want to throw money at a car thats not worth a great deal. Pleas Help !!