VY Series 2 V6 Rattle at mid-high rpm

[VYCamo]

Gday all,
Just driving around today around on the freeway, ect and i thought i'd put the boot in at a set of lights, only to hear this unearthly rattle/vibration coming from the mid/mid right section under the hood. Since then i have noticed the sound whenever the car pulls past about 3000rpm. Never heard this sound, and i can assure you its not the first time i've givin it stick at a set of lights.
Help would be appreciated, got a cruise down to Mandurah for Australia Day, and would hate for my engine to fall out lol.
Thanks in Advance :beer chug:
Cam

P.S Could it be my cats have finally died (they do rattle a bit on idle), and i probably should replace them :bomb:

 

[one_and_only2004]

I have the same problem - i pulled off my exhaust and the cat is a performance straight through design, the whole guts of it have come loose and are slowly rattling out! . Does it creak and rattle at just under idle revs?

 

[VYCamo]

Yeah they do, although its intermittent at times, Since series 2 VY's are dual cats though ill have to replace both, mite get outside in a bit and belt them with a mallet, see if it changes the vibration at all

 

[one_and_only2004]

just unbolt your exhaust and poke the honeycomb bit with a screw driver. Mine is loose - i can push it around.

Lucky i planned to go twin hi flow cat next month really...

 

[VYCamo]

Yeah will unbolt it first thing in the mornin *cough* going to gut them *cough* lol, should do for a temporary fix until i get around to buying some next week. Thanks for your help mate. :beer chug:

 

[one_and_only2004]

No worries. Let us know if it stops the rattle.

 

[chargedvx6]

Yeah will unbolt it first thing in the mornin *cough* going to gut them *cough* lol, should do for a temporary fix until i get around to buying some next week. Thanks for your help mate. :beer chug:

Gutting cats is a backwards move. It will reduce performance. Do it properly and get a wrecker replacement cat if ya can't afford a newbie ffs

 

[one_and_only2004]

Gutting cats is a backwards move. It will reduce performance. Do it properly and get a wrecker replacement cat if ya can't afford a newbie ffs

You obviously have no idea how annoying the noise is then.

 

[nick_]

I know first hand how annoying it is, but he is right. It is a backwards move and he'll be underneath the car again shortly after he's gutted them..

-Nick.

 

[acarmody]

If you think the rattle is annoying, wait till you get the fine for gutting the cats. Fines worth more than your whole car is.