YOUR RESEARCHC4 transmission noise??
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Read captured repliesInsufficient extracted evidence does not mean there is no answer in the original discussions.
1 matching discussions · 4 captured posts examined · 0 partial discussions
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.
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: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have a 2002 996 C4 tiptronic. Just bought, seems to have a transmission whine? Been advised could be wheel bearings but noise seems to be more constant than what you would expect for this. Any such problems on this model?
Hello, Welcome to the forum. The gearboxes are pretty strong and we have not come across any problems like that.. its from the rear of the car ? Mike
Hi & thank you. Id say that the noise is more from the front. I have had someone drive the car, a mechanic, who thuoght it could be possible transfer box or diff. He did however say that the easiest way of olimination & cheapest way would be to start with the wheel bearings? Thanks Andy.
Hi, We have had 4 diff failures in 6 years, and about 25 wheel bearings. Run it up on a ramp with the traction control switched off and see if you can hear anynoise with a stethoscope...sometimes they wont make any noise until they are loaded up. Mike
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