this is a 05 caravan with a 3.3 what i got is a stumble on light throtle no mater if ur just sitting in the bay or on the road at 50. when this happens my long term fuel trim is -19 and my crank and cam signal are in sync. 2 o2 sensors still no change . no codes are present

can you read a cam and crank difference??

yes my crank and cam difference is at max -1.0 and i also scoped the crank and cam and the wave forms dont do anything funky while it is doing it down the road. so the sync is good and my wave forms also look good. my question is i here the flex plate cracks on these but where?? i pulled the inspection cover and i didnt see any cracks or anything. i am getting puzzled over this thing.. fuel pressure while its doing it is 58psi. the only way i can discribe whats going on under light throtle something feels like its shutting down or like its dogish. but if u step right on it like caughs and goes