V35 6Mt Metal Vibrating Sound?

[MDV]

Hi Guys,

My names Mike and im the proud new owner of a white 2004 V35 Coupe

I was hoping someone maybe be able to help my identify a really irritating issue I have been having.

On cold start there is a sound that seems to be coming from under the car rather then from the engine bay (you cant hear it as loud when listening from the front).

The only way I can describe it is like a piece of metal is vibrating. Its most notable on cold start but also happens when you give it a rev in the low rev range and when accelerating from low revs while driving, I would say upto about 3.5k revs.

I am thinking something to do with the exhaust or a heatshield of some sort??

My dad and I are going to get under there and have a look today and any advices would be greatly appreciated!!

[Nightcrawler]

Yes, check for loose heat shielding, but more likely is that the inside of one of your cat converters has broken - in which case you need a new one (happened to me). The noise will get MUCH worse.

[t5iv]

Welcome to the group mate! Probably just heat shielding although would check cats. Any excuse to grab HFCs.

[MDV]

Thanks guys,

Nightcrawler I think you might be right as the noise has been progressively getting worse and I recall on a friends MX5 there was a similar noise happening as a result of debris in his Cat.

[bigdr33gtst]

remember the dual mass flywheel in the clutch is a noisy sucker in these setups, and will ,make sound until your clutch is pressed in.