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Odd sound?

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

Discussion summary

YOUR RESEARCHOdd sound?

Leading reported evidence

Run engine

Suggestion or failed attempt

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 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

Have you tried removing the serpentine belt to see if it�s present with the belt off (don�t run the engine with the belt off more than 60 seconds please).

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Odd sound?
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Leading evidence: 'Run engine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run engine' (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 · 6 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.

Run engine

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

Have you tried removing the serpentine belt to see if it�s present with the belt off (don�t run the engine with the belt off more than 60 seconds please).

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Odd sound?
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.

6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, Back with more concerns... why does my 996 engine, when cold, make a sound like lumber going through a table saw. Not constant but every few seconds. Kind of cool sound, but can�t imagine it�s a good thing. Thanks.

POST 2Original post

Open the engine lid and listen to the SAI pump run. It runs at first start and cold engine. When the bearings start to go bad, it sounds like a buzz saw. Proper noise is a gentle hum, like a small vacuum cleaner motor. The SAI pump is on the left side of the engine bay, black and looks like a small motor with hoses coming from it.

POST 3 / ORIGINAL POSTEROriginal post

Thanks for the fast response. Bearings as in IMS bearings that means total end of my car? Please say NO. Thanks.

POST 4Original post

No, bearings as in the bearing on the shaft of the fan in the SAI (Secondary Air Injection) pump that he described. Go look under the engine lid and listen

POST 5Original post

Quotes source post: 15435633

Your heart dropped quickly I bet

POST 6Original post

Post a video or audio of the sound. We love listening to all these different and strange 911 sounds to try to figure out what causes it. How long does the noise last? Only on cold start? Does it go away? Have you tried removing the serpentine belt to see if it�s present with the belt off (don�t run the engine with the belt off more than 60 seconds please).

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