Porsche Club GB

knocking noise from rear

Add to repair workspace

New repair projectOpen repair workspace

Original source

4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHknocking noise from rear

Leading reported evidence

Replace when the box came out

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed
to be dropped, but mine was replaced when the box came out for a flywheel & clutch.
Original post Read captured discussion
knocking noise from rear

Read full discussion summary

Leading evidence: 'Replace when the box came out' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace when the box came out' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 4 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace when the box came out

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed
to be dropped, but mine was replaced when the box came out for a flywheel & clutch.
Original post Read captured discussion
knocking noise from rear

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

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

Porsche Club GB: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

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

POST 1 / ORIGINAL POSTEROriginal post

I have a 2002 Carrera 4 Cab.. Tiptronic All is well and I love the car, performance is stunning as is the handling... I do have a small problem though, when i accelerate hard in any gear i get a loud clunk from the rear somewhere in the tunnel, I can feel it as well, like something hitting the body from underneath. If i pull away or accelarate gently, and feed the power in i dont get it. Would I be right in assuming I have an engine mount, or maybe a transmission mount about to fail or is this a normal sound? Any help and advice appreciated. I have my own bodyshop so I have access to a ramp and tools so if anybody can point me in the right direction Ill have a look.. otherwise its off to find a good Indy near Exeter regards Gary

POST 2Original post

There's a gearbox mount that is prone to delamination.

POST 3 / ORIGINAL POSTEROriginal post

Hi.. Any more info? front or rear? is it replaceable? is it a DIY job?

POST 4Original post

Yes, it should be replaceable if you have a ramp. You need to remove the rear undertray and have a nose around the front of the 'box on top from memory. The part is around £100 from memory. I really can't remember if the box has to be dropped, but mine was replaced when the box came out for a flywheel & clutch.

This is a source reference. Confirm exact model applicability in the original material.