When I drive I hear a jiggling in the back of my 92 SE when I hit any minor imperfection in the road. I just got the car and as far as I know it's a factory set up back there. I tried to make it jump up and to see what it is but I can't pin point it.

 

Check the exhaust system,they tend to to rattle at the cat converter heat shield,also check all the rubber exhaust pipe hangers..

 

hahahaha like the avatar.

anyhow, yeah i had to remove my cat heatshield. it's in my trunk. my grandpa demanded that i hold onto it, because he's absolutely positively sure that i'll fail my next inspection without it. .. yeah, i know what you're thinking. (inspectors in NC don't even LOOK at your car. well, maybe for a minute or two. but i know for darn sure they don't check everything they're supposed to)

 

You have a lot of junk in your trunk lol