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Porsche Club GB

Maybe diff noise ?

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHMaybe diff noise ?

Leading reported evidence

Replace gearbox oil & filter

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 · Original poster

The gearbox oil & filter was changed 1 year ago 6k down the line.

Original post Read captured discussion
Maybe diff noise ?
Frequently discussed work

Replace diff oil and try it out

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion · Original poster

I’ll change the diff oil and try it out.

Original post Read captured discussion
Maybe diff noise ?
Read full discussion summary

Leading evidence: 'Replace gearbox oil & filter' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'gearbox rather than differential' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace diff oil and try it 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.

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1 matching discussions · 5 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace gearbox oil and filter

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 · Original poster

The gearbox oil and filter was changed last May.

Original post Read captured discussion
Maybe diff noise ?

Replace into 3rd and let off, noise disappeared

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 · Original poster

It sounded like a wind up noise, changed into 3rd and let off, noise disappeared.

Original post Read captured discussion
Maybe diff noise ?

gearbox rather than differential

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
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 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

Very difficult tosay, but if it only does it in second gear then I would suspect the gearbox rather than differential.

Original post Read captured discussion
Maybe diff noise ?

likely

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
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 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

I was only suggesting that if the noise only occurs when in 2nd gear, and if it donsistently does it, then the problem is likely to be the gearbox rather than the differential.

Original post Read captured discussion
Maybe diff noise ?
Frequently discussed actions (4)

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

Replace diff oil and try it out

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion · Original poster

I’ll change the diff oil and try it out.

Original post Read captured discussion
Maybe diff noise ?

Replace gearbox oil & filter

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

The gearbox oil & filter was changed 1 year ago 6k down the line.

Original post Read captured discussion
Maybe diff noise ?

Replace gearbox oil and filter

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

The gearbox oil and filter was changed last May.

Original post Read captured discussion
Maybe diff noise ?

Replace into 3rd and let off, noise disappeared

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

It sounded like a wind up noise, changed into 3rd and let off, noise disappeared.

Original post Read captured discussion
Maybe diff noise ?
Reported and suspected causes (2)

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

gearbox rather than differential

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

Very difficult tosay, but if it only does it in second gear then I would suspect the gearbox rather than differential.

Original post Read captured discussion
Maybe diff noise ?

likely

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

I was only suggesting that if the noise only occurs when in 2nd gear, and if it donsistently does it, then the problem is likely to be the gearbox rather than the differential.

Original post Read captured discussion
Maybe diff noise ?
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.

5 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: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Another day and here we go, a couple of tight right handers full pelt 2 nd gear, lots of noise from the rear axel area, I drive with the roof down. It sounded like a wind up noise, changed into 3rd and let off, noise disappeared. The gearbox oil & filter was changed 1 year ago 6k down the line. What do you think? I‘ve not got to the fact I’ve not had music for 7 months due to no code and a battery change. The kids do enjoy a good guessing game though!

POST 2Original post

Very difficult tosay, but if it only does it in second gear then I would suspect the gearbox rather than differential. Was it a one-off episode, or does it do it consistently?

POST 3 / ORIGINAL POSTEROriginal post

Hello Richard, it only done it the once as I drove home slower. I’ll change the diff oil and try it out. There was a newer rumble that I can’t be sure was there before as I’ve found out how to put rear windows up with the roof down and all things are slightly different. The gearbox oil and filter was changed last May. You mention 2nd gear only is this the potential issue? Thank you for your reply, Kevin.

POST 4Original post

I was only suggesting that if the noise only occurs when in 2nd gear, and if it donsistently does it, then the problem is likely to be the gearbox rather than the differential. Diff whine would occur in all gears. I assumed that is what you mean by "wind up noise". Always difficult to describe noises in words. The 996 gearbox is pretty robust, and the only occasional issue I hear of is mainshaft bearing noise. That doesn't sound like your issue though.

POST 5Original post

Kevin, I’d agree with Richard’s comments, and diff and gearbox noises really require expert diagnosis. Just a thought but you may also want to consider a rear wheel bearing problem if the noise appears predominantly when you’re cornering? Jeff

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