Underbody Rattling

[Auto-9]

Whenever I rev up the engine and let off the pedal it rattles like it's smacking on something. At first I thought it was the catalytic converter but then I thought that it would make the sound while the car was revving so I ruled it out...but I haven't tried to tap it yet. Think this is anything I should be concerned about? It's not a light tapping sound either, it's a full blown "kling kling" sound.

[Lazarus]

Have you replaved anything under the hood/ car? I replaced the header and cat and all and some how I have a loose washer under my driver side floor board.

[pinoyesv6]

have u check out ur exhaust system like maybe a loose bolt or a heat shield rubbing somethere?

[Auto-9]

We discovered was it was...when we revved the downpipe and exhaust flexes away from the front heat shield but once we let off it swings into it. Can't wait till I get my headers...hopefully all of my exhaust related problems go away.

[Lazarus]

NO.....they will be just begining :wink: