Honda Civic stuck in your under carriage??
Seriously, I had a clanking under my CR when I got it and found 2 of the 4 bolts holding the rear anti-sway had snapped!!
Replaced them with grade 8 stuff and noise was gone AND 8 years later they are still tight!!
Good Luck!!
Coosawjack
(8 Years Later??? Time flies!!!
)