Mine does it every morning before the fluids are warmed up. I back out of the garage and then make a right turn. I get the studder/popping feeling through the steering wheel. If I've been driving the 4runner and it is warmed up and then I back out of the garage later in the day "NO" studder/popping. I figure it is a limited slip fluid that needs to warm up. I experienced the samething with a Dodge 1ton dually from the rearend until the fluid warmed up. I figure I will ignore this "problem" until I have the front and rear diff's fluid changed by the dealer at 15K miles. If it continues and seems like a problem I figure I have 60K miles of warranty to have this addressed. I really don't think it is a problem, just the nature of a AWD vehicle. Anyone else notice this???