Planet-9

cold weather - cabin boom gotcha Please help

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

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YOUR RESEARCHcold weather - cabin boom gotcha Please help

Leading reported evidence

Tighten some studs

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
Some have tightened some studs on trunk clamps, some have loosened them , some talk about resonance padding and what not. I understand this does not affect all 987's but for those of you that have known this and solved it please chime in so I can decide whether to keep looking for another 987 or just skip and go
Original post Read captured discussion
cold weather - cabin boom gotcha Please help
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Frequently discussed work

Test drive

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
The weather here in Chicago was very cold and so I had to roll up both windows during the test drive.
Original post Read captured discussion
cold weather - cabin boom gotcha Please help

Read full discussion summary

Leading evidence: 'Tighten some studs' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test drive' (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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1 matching discussions · 7 captured posts examined · 1 partial discussions

Compare 3 other evidence results

Test drive

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
The weather here in Chicago was very cold and so I had to roll up both windows during the test drive.
Original post Read captured discussion
cold weather - cabin boom gotcha Please help

Test drive over the weekend

Suggestion or failed attempt

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
However since the 987's can now be had for $20k to $25k I was tempted and did my first 987 test drive over the weekend.
Original post Read captured discussion
cold weather - cabin boom gotcha Please help

Test drove the

Suggestion or failed attempt

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
Test drove the
Original post Read captured discussion
cold weather - cabin boom gotcha Please help

Frequently discussed actions (4)

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

Test drive

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
The weather here in Chicago was very cold and so I had to roll up both windows during the test drive.
Original post Read captured discussion
cold weather - cabin boom gotcha Please help

Test drive over the weekend

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
However since the 987's can now be had for $20k to $25k I was tempted and did my first 987 test drive over the weekend.
Original post Read captured discussion
cold weather - cabin boom gotcha Please help

Test drove the

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
Test drove the
Original post Read captured discussion
cold weather - cabin boom gotcha Please help

Tighten some studs

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
Some have tightened some studs on trunk clamps, some have loosened them , some talk about resonance padding and what not. I understand this does not affect all 987's but for those of you that have known this and solved it please chime in so I can decide whether to keep looking for another 987 or just skip and go
Original post Read captured discussion
cold weather - cabin boom gotcha Please help
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

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.

7 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 · 1 adjusted by outcome qualification.

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

Generation: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I am in the market for a 987 or 981 . Test drove the 981 and all is good. However since the 987's can now be had for $20k to $25k I was tempted and did my first 987 test drive over the weekend. The weather here in Chicago was very cold and so I had to roll up both windows during the test drive. Lo behold that annoying cabin boom started from the trunk area. The salesman said that was normal in these cars but is a deal breaker for me. I then googled and found various threads discussing this issue but there is no clear consensus on what the permanent fix is or some detailed diy etc. Some have tightened some studs on trunk clamps, some have loosened them , some talk about resonance padding and what not. I understand this does not affect all 987's but for those of you that have known this and solved it please chime in so I can decide whether to keep looking for another 987 or just skip and go 981 .. Thanks

POST 2Original post

Nothing but good noises came from my 2006 Cayman S , and I drove it thru the VT winter. If I were you I wouldn't hesitate to look at another 987.

POST 3Original post

Do you have PASM ? Also what size wheels ? Apparently this affects only some 987's with no pasm and 19" or 20" wheels..

POST 4Original post

I've had 987s and 981s with wheel sizes from 17" to 20". I have never experienced "cabin boom" . . . just good engine sounds. You might have to get used to the sound of a mid-engine hardtop but that shouldn't take too long. Good luck! :cheers:

POST 5Original post

these cars are sensitive to the cabin boom esp. if an aftermarket exhaust and air filter is fitted. that being said, these cars are a cacophony of sounds..... engine, gearbox, etc. but when you wind her up...... eargasm....

POST 6Original post

Sounds like good-old "trunk thunk". There are several possible causes so no one can diagnose it for sure/ All are fixable with a little effort. No big deal. Mine is solid as a rock after adjustment. However, I've never heard a "boom" noise. Usually a creak or rattle going over road undulations. So it might be caused by something else. Like a loose muffler hanger or something else that is loose. I would not buy that car without a careful PPI.

POST 7Original post

Mine is stock with 19" wheels, no PSAM and no boom, ever. The trunk clunk when going over bumps is a know issue and easily fixable and after market exhaust systems very often will "drone" at certain rpm ranges but actually I'm not familar with 987s having a "boom" problem.:cheers:

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