Porsche Club GB

engine whine

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHengine whine

Leading reported evidence

Check with a long screwdriver

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
Easily checked with a long screwdriver to the ear!
Original post Read captured discussion
engine whine

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Leading evidence: 'Check with a long screwdriver' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check with a long screwdriver' (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 · 8 captured posts examined · 0 partial discussions

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Replace thrust bearing and dual mass flywheel

Performed · outcome unconfirmed

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
We have already changed the thrust bearing and dual mass flywheel
Original post Read captured discussion
engine whine

Frequently discussed actions (2)

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

Check with a long screwdriver

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
Easily checked with a long screwdriver to the ear!
Original post Read captured discussion
engine whine

Replace thrust bearing and dual mass flywheel

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
We have already changed the thrust bearing and dual mass flywheel
Original post Read captured discussion
engine whine

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.

8 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

C4s 2002 Has anyone out there got any answers for an annoying whine that is proportional to engine speed particularly from idle to 2k rpm. We have already changed the thrust bearing and dual mass flywheel and also the 2 belt tensioning pulleys and water pump!! All of these showed wear but the noise hasn't been fixed . Please help my wallet is emptying fast!

POST 2Original post

Alternator bearings!

POST 3Original post

Or drive belt bearings. Easily checked with a long screwdriver to the ear!

POST 4Original post

Pronounced whine at low revs could be the vacuum pump.

POST 5Original post

Try turning off the AC. Mine makes a backgroud whine seems to vary depending on how hard the AC is working.

POST 6Original post

I've found the whining stops if I take the missus out of the car....um, she can't get on here to read this can she....?

POST 7Original post

+1 on the AC pump. I discovered that when the AC on my C2 runs lowish on gas, the whine happens when the AC is on & immediately disappears when turned off. The noise is most noticeable at idle, before other noises drown it out. It seems a great warning to get it topped up - as long as you know ! The first time it happened I thought the worst & even the AC "expert" didn't believe me until he heard it for himself. As soon as the system was re-pressurised the noise disappeared totally - with AC on or off ! Paul 2004 996 C2 40th Anniversary

POST 8Original post

Have a look at my post about the whine I experienced on my engine >>>HERE<<< Post 2 - you may find it is useful if only to eliminate it.

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