Porsche Club GB

knock/rattle

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHknock/rattle

Leading reported evidence

Replace anti roll bar drop links and the transvere arms

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 · Original poster
I've replaced the anti roll bar drop links and the transvere arms for the rear suspension so it is not a suspension problem.
Original post Read captured discussion
knock/rattle

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Leading evidence: 'Replace anti roll bar drop links and the transvere arms' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'cause' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace anti roll bar drop links and the transvere arms' (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 · 3 captured posts examined · 0 partial discussions

Compare 1 other evidence results

cause

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect a cause: 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.

Suspected cause
It could be worth checking that the engine cover closes tightly, I had a knock from the back of mine over bumps and the engine cover turned out to be the cause.
Original post Read captured discussion
knock/rattle

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 anti roll bar drop links and the transvere arms

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 · Original poster
I've replaced the anti roll bar drop links and the transvere arms for the rear suspension so it is not a suspension problem.
Original post Read captured discussion
knock/rattle

Reported and suspected causes (1)

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

cause

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect a cause: 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.

Suspected cause
It could be worth checking that the engine cover closes tightly, I had a knock from the back of mine over bumps and the engine cover turned out to be the cause.
Original post Read captured discussion
knock/rattle

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.

3 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: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I've got a 1998 C2 Cab and have had an annoying knock/rattle from the rear of the car when going over cobble stones or bumps. I've replaced the anti roll bar drop links and the transvere arms for the rear suspension so it is not a suspension problem. It also appears to disappear or quieten down when the hard top is on so I am assuming it is something to do with the soft top assembly or the panels around there. Has anyone got any ideas as it's driving me mad?!

POST 2Original post

Hello have you checked that the anti-roll bar bushes are not worn out ? Mike www.sportsandclassic.com

POST 3Original post

It could be worth checking that the engine cover closes tightly, I had a knock from the back of mine over bumps and the engine cover turned out to be the cause. Although as your noise disappears when the hard top is on it is more likely to be connected with the associated panels, unless it is just that you cannot hear it so much with the hard top on. Terry

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