The noise only happens when the 4runner is in gear, and you are under acceleration. If you take your foot off the gas even when you are still moving, the whine will go away. I can have the vehicle in park or neutral and be giving it some throttle and it will not make the whining sound. It has...
I have the same problem with a whine in my transmisson also. It only does it while in gear and being driven. As soon as you take your foot off the gas it goes away. I took it to a local shop and they suggested a change of tranny fluid and filter. This didn't solve the problem. I just kept...