Catalytic converter on '94 Cavalier

I am hearing grinding/vibrations that seem to be coming from the catalytic converter every time I accelerate or decelerate, high speed or low speed. The noise just about dies out when I come to a stop and it disappears completely when I shift into park. Put the car back in gear and the vibrations start up again, although quiet. PCV valve and air filter are both new; I first noticed this problem a couple of days ago, after several straight days of rain, not sure if that is related or not. Any thoughts would be of help. Thanks.

this post could be to late but it might be somethign inside there brokin off off and flying around why your hiting the gas or theres exhaust coming out i would suggets going to a shop of someone you know and get it hollowed out if you light speed it will add horsepower and give you and intimidating sound fomr the muffler

Why answer a post thats two months old with a sstupid f*cking answer like that?!

dude get off my nuts and leave me the fuck alone just because you got a damn ugly ass cavi dont get pissed at me

Hey truema666ot just think of it this way sweetwhiteCAV looked at the post so it's quite clear that he was going to reply to it to.....What an idiot.

mikey its your resonator i had the EXACT same problem you need to get it fixed just take it to carx or something itll run you a few hundred bucks

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