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Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

Discussion summary

YOUR RESEARCHWeird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Reported or suspected cause

fresh air recirculator servo was

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

It turned out to be the the fresh air recirculator servo was on its way out.

Original post Read captured discussion
Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work

Reset itself and trying

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 · Original poster

It sounds like an electric motor trying to close the vents, and then resetting itself and trying again.

Original post Read captured discussion
Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'fresh air recirculator servo was' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'fresh air recirculator servo was' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Reset itself and trying' (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 · 3 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Reset itself and trying

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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 · Original poster

It sounds like an electric motor trying to close the vents, and then resetting itself and trying again.

Original post Read captured discussion
Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run making a very quiet knocking noise

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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 · Original poster

A servo or electric motor constantly running making a very quiet knocking noise from the passanger side.

Original post Read captured discussion
Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

Reset itself and trying

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 · Original poster

It sounds like an electric motor trying to close the vents, and then resetting itself and trying again.

Original post Read captured discussion
Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Run making a very quiet knocking noise

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 · Original poster

A servo or electric motor constantly running making a very quiet knocking noise from the passanger side.

Original post Read captured discussion
Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

fresh air recirculator servo was

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

It turned out to be the the fresh air recirculator servo was on its way out.

Original post Read captured discussion
Weird sound from under the dash - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

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

  • 986Forum: 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: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have been having a strange sound coming from under my dash, and I was wonderng if someone out there has the same problem and/or can tell me how to fix it. Ok I will try to describe this as best as I can. Car on, but NOT running....turn your AC on. choose the upper vents, there is a sound of something under the dash...like a loover selector or somethng that electrically opens and closes to direct air flow. Now choose heat or floor, you can hear the selector once again opening and closing. Now here's my problem: Car is on, motor is on. radio off, AC off, Fan off. Very quitely, I can hear somehting opening and closing, basically the same sound as described above. It sounds like an electric motor trying to close the vents, and then resetting itself and trying again. Sounds like rocks rolling around in a muffled plastic box. It has been doing this for years and I cant seem to pinpoint it. Any ideas? Thanks I dont know if this has anythig to do with it, but my radio does not tuen off when I take the key out. I have to push the button. Gremlins I guess.....

POST 2Original post

Hmm, not sure if this helps or not, but I was getting a flapping noise that would come from under the passenger side dash when I turned off the A/C, heat or defroster. It could definitely be heard better when the car was not running and I guess the sound could have been described as rocks rolling in a plastic container/cylinder. It turned out to be the the fresh air recirculator servo was on its way out. My warranty replaced it. I have a 2001 with 37k on the odometer at the time.

POST 3 / ORIGINAL POSTEROriginal post

that sounds like what it is. A servo or electric motor constantly running making a very quiet knocking noise from the passanger side. Cool, know I know what to look for. Thanks!!

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