Planet-9

New rattle/tapping from 987 boxster

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12 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHNew rattle/tapping from 987 boxster

Reported or suspected cause

loose o2 sensor

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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 report identifying a cause: 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.

Reported cause
The rattle I had turned out to be a loose o2 sensor.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Frequently discussed work

Check accessory items and pulleys, obvious heat shields

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
Checked torque on all O2 sensors, checked all accessory items and pulleys, obvious heat shields.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Read full discussion summary

Leading evidence: 'loose o2 sensor' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'loose o2 sensor' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check accessory items and pulleys, obvious heat shields' (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 · 12 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Check accessory items and pulleys, obvious heat shields

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
Checked torque on all O2 sensors, checked all accessory items and pulleys, obvious heat shields.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Check tensioner

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
I checked the tensioner.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Check torque

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
Checked torque on all O2 sensors, checked all accessory items and pulleys, obvious heat shields.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Replace serpentine belt this summer nothing obvious was loose

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
When I changed the serpentine belt this summer nothing obvious was loose on any pulleys.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Frequently discussed actions (8)

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

Check accessory items and pulleys, obvious heat shields

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
Checked torque on all O2 sensors, checked all accessory items and pulleys, obvious heat shields.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Check belt tensioner while you were in there

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
did you by any chance check the belt tensioner while you were in there?
Original post Read captured discussion
New rattle/tapping from 987 boxster

Check items in posts 2, 3

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
josh have you checked the items in posts 2, 3 from owm and budman?
Original post Read captured discussion
New rattle/tapping from 987 boxster

Check tensioner

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
I checked the tensioner.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Check torque

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
Checked torque on all O2 sensors, checked all accessory items and pulleys, obvious heat shields.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Replace serpentine belt this summer nothing obvious was loose

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
When I changed the serpentine belt this summer nothing obvious was loose on any pulleys.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Tighten every bolt

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
Tighten every bolt to a heat shield I could get to.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Use stethoscope

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
josh it sounds like you did the right thing, using the stethoscope on the water pump, alternator, a/c compressor or steering pump.
Original post Read captured discussion
New rattle/tapping from 987 boxster

Reported and suspected causes (1)

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

loose o2 sensor

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 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.

Reported cause
The rattle I had turned out to be a loose o2 sensor.
Original post Read captured discussion
New rattle/tapping from 987 boxster

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.

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

Planet-9: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link
I put all new gaskets on the exhuast, and no change.
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi all I've noticed a new noise today on my 2011 2.9 39k miles Boxster . It's quite tinny louder than the normal tapping noise which I'm used to in this car and my previous caymans and only there when revs are between 1800 - 3000 and only when engine is warm. 40k service was done 1500 miles ago. I've taken a video of the noise, it's my little one in the background saying it sounds like a tractor ?? https://youtu.be/9Rzw2xfDG4o Any suggestions welcome! Many thanks Steve

POST 2Original post

Check the water pump, alternator and other pulleys where the belt runs through?

POST 3Original post

+1, particularly if the pump and associated pulleys are original.

POST 4Original post

Hey Steve, Any verdict on this rattle? Diagnosing something similar myself.

POST 5Original post

Any resolution to this? My 2011 has the exact same sound. Haven't yet to pin point it yet.

POST 6Original post

josh have you checked the items in posts 2, 3 from owm and budman?

POST 7Original post

I'll deep dive into that area more this week. I've been under the car while replicating this noise with a stethoscope and cannot for the life of me locate the area that it emanates from. I'll pull all the covers off this week and keep digging. When I changed the serpentine belt this summer nothing obvious was loose on any pulleys. I keep checking that area though.

POST 8Original post

The rattle I had turned out to be a loose o2 sensor. Tap on your cat to see if the cat material is loose or wiggle the 02 sensor to see if it needs tightening.

POST 9Original post

Update, root cause not found for me yet. Checked torque on all O2 sensors, checked all accessory items and pulleys, obvious heat shields. It still appears to be exhaust related, but cannot pin point. I'm thinking maybe an exhaust leak I can't find or a cat going bad. I'm leaning towards catalytic converter, the sound only happens when the engine is hot, and I mean fully hot. I've taken a stethoscope to every other thing I can think of. If I ever figure it out, I'll post here.

POST 10Original post

Found this thread, where some posters had the same sound in their 981s, squeaks5635 went through a lot of dilemma at the dealer with no resolution. Seems like no one has found the cause and it's common on 9a1 engines... https://www.planet-9.com/threads/cayman-gts-loud-and-worrying-cliking-noise.178394/

POST 11Original post

josh it sounds like you did the right thing, using the stethoscope on the water pump, alternator, a/c compressor or steering pump. did you by any chance check the belt tensioner while you were in there? any oil leak?

POST 12Original post

I checked the tensioner. No leaks I can find. I took the whole exhaust off this weekend to see if there was something loose or an exhuast leak. I put all new gaskets on the exhuast, and no change. Tighten every bolt to a heat shield I could get to. I'll probably stethoscope the cam chain tensioner areas as a last ditch effort. Though this doesn't seem to be a cam chain tensioner issue. I guess at some point I'll just have to live with it.

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