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Odd harmonic around 5200 - 5400 rpm

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

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YOUR RESEARCHOdd harmonic around 5200 - 5400 rpm

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Check doubtful issues

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Unsuccessful attempts: 1
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Suggestion
I'd really check for doubtful issues that can come back again..
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Odd harmonic around 5200 - 5400 rpm

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

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Check doubtful issues

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
I'd really check for doubtful issues that can come back again..
Original post Read captured discussion
Odd harmonic around 5200 - 5400 rpm

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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.

Rennlist: 1 discussions

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Generation: 20261026T083035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I hear this sound that can be best described as a loud TRRNNGGGGGG (almost like old-school bicycle bell) that happens when the tach needle sweeps past 5200 and disappears around 5400. It is higher pitched than the engine note and is very noticable. Even though I have a 2001, I bought it only 3 months ago and the mileage now is around 2500. I was waiting till hitting 2000 to really start exploring the upper-end of the engine, so I have never had the chance to notice this before. Can anyone shed any light as to what this might be?

POST 2Original post

Does it happen when the car is parked, and if so cant you have some1 rev the car while you track the source of the sound? wael

POST 3 / ORIGINAL POSTEROriginal post

Thanks Wael. I drove it to work yesterday and noticed that the odd harmonic sound is gradually getting less or disappearing all together. Maybe it was due to the fact that the engine is being "broken" into these rpm's for the first time? Who knows but I'm now happy again

POST 4Original post

I'd really check for doubtful issues that can come back again.. maybe a wire is caught in the shafts or something else like a lose screw that really got out! better safe than sorry.. anyway, glad things are getting normal again.. Wael

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