Porsche Club GB

996 Tiptronic Noisy Gearbox/Diff

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 RESEARCH996 Tiptronic Noisy Gearbox/Diff

Leading reported evidence

Replace front diff

Suggestion or failed attempt

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 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
However I have finally decided to replace the front diff.
Original post Read captured discussion
996 Tiptronic Noisy Gearbox/Diff

Read full discussion summary

Leading evidence: 'Replace front diff' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace front diff' (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 front diff

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
However I have finally decided to replace the front diff.
Original post Read captured discussion
996 Tiptronic Noisy Gearbox/Diff

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: 20261026T172408Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a 996 tiptronic that had a noise/whine coming from the garbox/diff area. Porsche do not supply parts for the Tiptronic, only the gearbox/diff as a whole at around £4500+ vat + fitting. However, the older 996's need the control unit upgrading at another £1000+vat. The car is at a specialist gearbox company and the Crownwheel & Pinion need replacing as they are worn. Porsche dont supply these. Apart from ZF (the gearbox supplier) can anyone piont me in the direction of a supplier of these parts? Many thanks, Rob

POST 2Original post

Have they tried http://www.netcomuk.co.uk/~kamdiffs/kamscrn2.html

POST 3 / ORIGINAL POSTEROriginal post

Hi Nigel, Many thanks, I will try them. Managed to get prices from ZF but I will bear these people in mind. Do they do straight replacements or upgrades? Have you any personal experience with these people? Many thanks, Rob

POST 4Original post

My C4 has had a whine from (i think) the front diff for the last 12 months. Steadily getting worse less so if not used for a couple of days. However I have finally decided to replace the front diff. Parts are coming from Porschapart. They dismantle crashed vehicles - a great source of good secondhand parts - give them a try.

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