Hey guys, I have a 95 Honda accord ex. It's lowered on coil overs massively, and I made the mistake of going on a bumpy *** road a couple weeks ago. Since then there's been a rattling/ knocking sound coming from under my right side passenger seat. It only happens when I'm below 2 grand. Or when I'm in gear and let off the gas. Then as soon as I press in the clutch pedal it goes away? I jacked the car up and felt that the source was something internal. It's like a black box behind the drivers seat under the car... I can't figure out what's wrong with it and I'm worried I'm damaging my car somehow. Ideas? What should I look for? Help me out here.

 

i kind of have this problem but only when i first start my car theirs a rattling noise from under my car, it goes away after a few seconds though ??

 

A loose cat converter heatshield rattles around a certain rpm. Sounds like something else though, can't really tell till you get it in the air.

 

What he said. Most common metal rattling sound under the Honda is the heatshield. If that is not loose then there isn't much else that can rattle under the car except the exhaust itself.

 

Aforementioned, check those damn heat shields. Every Honda I've owned had that problem. I usually just jack the car up, throw it on stands or a ramp and pull them off myself. You could have a shop check it for you. Some shops may do it for free and if there's a charge it'll probably be minimal $10-$20.