Well the solution happened, not without a big problem, but at last quiet. The sound started to increase more, now it sounded like the left front bearing. ordered bearing and replaced, but during the pressing of the old bearing out something went wrong and the steering knuckle was bent where the brake caliper is mounted. put it all together and the wheel would not turn because the caliper itself was hitting the disk. Had to order a new steering knuckle ($268) and a new bearing, because in order to remove the hub you always destroy the bearing in the process. so my original $37 job turned into close to $400...Oh well, I have saved thousands over the years by wrenching on cars, so I chalk it up to part of the learning time. Be very careful when you support the steering knuckle in a 12 ton press to remove the bearing....The good news is now it is quiet like a hybrid should be. Also I want to note Toyota of Roseville stepped up and became very competitive price wise for the replacemnt steering knuckle...(no I dont work there). But they deserve mention as my vender of choice when not using the internet....