I'll bet most anything you want that it is not the TC, UNLESS the bellhousing bolts are loose, which I'd check first thing. I'd jack it up under the lower a arm and use a big pry bar to check the ball joints and tie rod ends AND the idler arm on the pside. Also have a helper turn the steering wheel left/right/left/right to check the steering joints, including the latter two in the list above. Also check the wheel bearings for tightness by grasping the wheel at top and bottom and vigorously wobbling the wheel. Also try to shake the outer end of the cv shaft in the hub, checking the needle bearings there. Inspect the shock end bushings. Also put a jack on the oil pan and inspect the motor mounts for breakage and deterioration. The sound you hear may be the fan hitting the shroud...

Also inspect the ujoints in the rear driveshaft. Any slop means new uhoints...