Having hesitation when accelerating in my 2003 RAV4 when it is cold. I have replaced plugs, coils, and cleaned MAF sensor - and no change. It is worse when it is cold, and once it is warm, it drives fine with no hesitation. I’ve read the ignition harness/wiring maybe the cause (I think this is the correct term - the wiring attached to the coils). But I have been unable to find any video or pics of how to do this on my model. And it did not seem straight forward when I looked at the wiring. I searched the forum but could not find a similar post. Any help would be greatly appreciated.