So my wife tells me I need to drive her 02 4runner because she feels a weird vibration. Little background, 2 weeks ago had a transmission put in with a new mount, slip yoke, and U-Joints. So I double check the repairs visually. Everything looks good. Then I get new strut mounts with new KYB struts and shocks. Of course had tires balanced, rotated, and aligned. Pick it up the tech says drive it please because the popping noise is gone but still feel a light vibration in the floor board on my left foot. Little more background, it's a limited Rwd. So I drive it and yep stil a light vibration in the floor board. I go back ask the tech to sit in it and tap his foot so I can feel around. He does and I feel around the exhaust, brake lines on the frame, and look for loose panels on the undercarriage and nothing is loose. So I reach up to grab the running board to pull myself out from under 4runner and it jiggles a little. I then ask the tech to tell me if he feels the vibration when I shake the running board and Hello it's a yes!

So mind blown we swap spots and yep it the vibration. So lesson learned don't overlook the stuff in front of your eyes!