Weird rattle/rumble/buzzing noise from rear

[911newb911]

Hi all,

I have a strange intermittent noise coming from the rear of the car - when driving around it can be heard from the rear of the car (dont think its actually inside - maybe wrong) - its like a rumbling/buzzy type noise.

The noise can sometimes happen when stationary too if I rev the engine and the revs drops it can sometimes be heard (maybe the engine is vibrating the rear of the car)

Another way I sometimes can make it happen is holding the car on the biting point and slowly release clutch to cause the car to judder slightly (again the engine area vibrating i guess).

Any ideas what this could be? I have it booked into the garage next week to get it checked out, but knowing my luck it wont make the noises then!

This noise happened a couple of times when I first bought the car, but now it is a lot more frequent.....

I did think it maybe could be the spoiler but not sure if that noise could be heard inside car so easily....

[Loren]

Sounds like a muffler heat shield is bent.

[spluff]

thanks for the reply... this is a brand new car which has only done around 700miles - how would the muffler heat shield bend? is this common?

[Loren]

thanks for the reply... this is a brand new car which has only done around 700miles - how would the muffler heat shield bend? is this common?

Heating and cooling, tie downs on the boat over, improper lifting on the hoist at PPI.

Since you are under warranty - let the dealer fix it.

[Deanski]

Yes, it does sound as if the muffler area may be at fault. Some even had defective muffler cans.

Your dealer can isolate this with the new remote microphone systems some dealers have now to track down issues such as this.

Let us know what they find.

Deanski

[RFM]

Is the car a gen.1 or a gen.2 ( DFI ) ?