Hi guys,I have a 2003 Montero Sport that I just changed motors from a 3.5 to a 3.0.The motor ran fine in the doner truck but now it will run fine idling but when you excellerate it will shut off after a few seconds. I have changed fuel filter,fuel pump,all 3 coils,MAF,and every relay that I can find.Please help I don’t know what else to do.