02 RX300.. In the morning when I first start the RX and drive, I hear a whirring sound that is in sync with the throttle, that sounds like a dry pump working. After a couple minutes the sound goes away for the rest of the day, unless the car sits for another 10 hours. It sounds like it’s coming from the top end on the driver side. The check engine light, and no other warning lights are on, and all the fluids are full... Oil, transmission, brake, power steering, and coolant. Again, it sounds like a dry pump working, that goes away after about 2 minutes. Whatever the sound, it doesn’t sound optimal. Any ideas?? Thanks in advance!