Has anybody ever noticed on moderate acceleration from a stop to highway speeds going downhill, sometimes the transmission gets confused in 3rd gear? On my 4Runner, it will let the RPM come up to around 3,000 or so, even if I am not longer accelerating very much, then after what seems like a couple of seconds it will all of a sudden get confused where the rpms climb up about 500 or so, then it drops directly into overdrive where it will then be sitting at 1,800-2,000rpm like it should have been in the first place? I only tend to notice this when I'm leaving my house heading a specific direction that involves a fairly nice downhill right out of my neighborhood onto a highway. It's about the only time I notice it do that.
Ricky