Jul 18, 2010 · A bearing perhaps? Could be a pulley bearing, or something along those lines. While under the hood, grab the throttle and rev it a bit to see if you can get in proximity of the sound.
Mar 25, 2020 · When transmission fluid is low, the transmission tends to jerk or slip when changing gears. The vehicle may also speed to high revolutions per minute while in neutral or without the vehicle speeding up or spontaneously slip out of gear. A burning smell is another sign that transmission fluid may be low.