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Any help identifying what this noise is from the rear of my 996 C4S?

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YOUR RESEARCHAny help identifying what this noise is from the rear of my 996 C4S?

1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.

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1 matching discussions · 3 captured posts examined · 0 partial discussions

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3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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Generation: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, I would really appreciate any thoughts regarding this noise from my 02 C4S that has sprung up 2 days ago. It seems to be intermittent but always be there in some capacity when I�m driving around. It doesn't change in pitch with engine speed as you can hear in the video. It seems to be 'activated' by hitting the throttle but won�t always be there when accelerating. As in, the noise can be happening when I am not on the throttle and just coasting. It appears to be better once the oil/water temp comes up, however I can�t say this definitively. My initial thoughts are it's a heat shield that is loose or less economically, something broken with the catalytic converter. Thanks!

POST 2Original post

Too much background noise........go somewhere quiet and do another recoding and also try to manipulate the noise doing whatever it takes to make the noise change,, and also document what yor are doing to manipulate the sound...

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