2005 Nissan Pathfinder - Hesitation

runs fine but when stop and go hesitates to accelerate, when I was driving on highway felt like a hose or something broke. but continued to run fine, what can cause the hesitation ?

About 10,000 things could cause this. You can help narrow things down by giving us everything you can think to us about your vehicle and its problem starting with; is the check engine light on?