Hi there...Please Help...I'm trouble-shooting a 2004 Santa Fe (2.7L) AWD. The car inconsistantly hesitates / jumps (2-3 times) under acceleration from stop or rolling stop only. It starts & idles fine. No hesitation or kick down concerns while driving normally. No dummy lights on. I see from other posts that it seems like quite a common problem but no real "start here" suggestions or solutions found. I see a bunch of sensor choices and reprogramming options but where should I start? Thanks