Any one ever experienced a rattling noise (sounds like something metal) when you go over bump or cracks? I recently changed the sway bar link (noise was coming before that as well) not sure where it can come from. Any help would be great

 

Like was said in another thread, check the heat shield near the cat converter.
=================================
My karma just ran over your dogma
Current Hers: '13 Lexus ES350
Current Mine: '15 Jaguar XF (it's aubergine)

 

****, your last mechanic might have dropped a socket or something down there between the splash shield and the bumper. Put the car on jack stands and get underneath and touch everything.

If it was me, I would shake the hell outta the car until I figured it out. lol.

 

Might be a little late for this, but my mechanic took off all the inspection covers under the car and found dozens of gravel rocks. Especially in the cover under the trunk. Easy enough to tell with the car up on jacks and a bump with your fist against all the plastic panels under the car.