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911uk

Annoying Buzz from Rear

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

Discussion summary

YOUR RESEARCHAnnoying Buzz from Rear

Reported or suspected cause

frequency rattle comes

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
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 suspect 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.

Suspected cause

The spoiler is bolted down under pressure from two large spring clips and I would suspect the frequency rattle comes from these or the spolier being slightly loose.

Annoying Buzz from Rear
Frequently discussed work

Check diy section

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

Check the diy section on p-car.com for more information.

Annoying Buzz from Rear
Read full discussion summary

Leading evidence: 'frequency rattle comes' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'frequency rattle comes' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check diy section' (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 · 4 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Check diy section

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

Check the diy section on p-car.com for more information.

Annoying Buzz from Rear

Tighten two retainer screws underneath

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

Forgot to add, if the actual 3rd brake light is loose and rattling, then you will need to remove the spoiler and tighten the two retainer screws underneath.

Annoying Buzz from Rear
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.

Check diy section

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

Check the diy section on p-car.com for more information.

Annoying Buzz from Rear

Tighten two retainer screws underneath

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

Forgot to add, if the actual 3rd brake light is loose and rattling, then you will need to remove the spoiler and tighten the two retainer screws underneath.

Annoying Buzz from Rear
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.

frequency rattle comes

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect 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.

Suspected cause

The spoiler is bolted down under pressure from two large spring clips and I would suspect the frequency rattle comes from these or the spolier being slightly loose.

Annoying Buzz from Rear
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.

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

  • 911uk: 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: 20261027T005001Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi All, Last couple of times I've had the car out it has developed an annoying buzz coming from the rear somewhere. You only hear it as certain revs, or sometimes with certain bass notes at reasonable volume on the stereo. I've been in the back and taps a few bits, especially speaker grills etc, but everything seems solid. But then I hit the top of the rear glass, and can hear a bit of a rattle. It looks lile the spoiler/third brake light holder is slightly loose, and might be the culprit. Can someone with a 993 (an no noise!) give their brake light holder a bit of a tap and see if it sounds a bit loose/rattly? Any ideas how the spoiler bit is held on? No obvious signs. I had a look in through the zip inside, but there are extra panels to remove to see anything and I've not done that yet. Colin Migration info. Legacy thread was 11052

POST 2Original post

Hi Colin, I don't suffer from a rattle, so I've just tapped my brake light for you to see what happens. The "brake light holder" itself is very tight and doesn't have any movement, but if I tap the brake light directly then its is slightly loose. Sorry, I can't be of more help! Cheers Migration info. Legacy thread was 11053

POST 3Original post

Hi Colin, The 3rd brake light / spoiler is bolted onto two studs glued to the rear screen. You can access these by gently prizeing off the painted spolier (held on with about twenty springs clips), which will then reveal the spolier and the two retainer nuts (13mm from memory). The spoiler is bolted down under pressure from two large spring clips and I would suspect the frequency rattle comes from these or the spolier being slightly loose. Check the diy section on p-car.com for more information. Migration info. Legacy thread was 11055

POST 4Original post

Forgot to add, if the actual 3rd brake light is loose and rattling, then you will need to remove the spoiler and tighten the two retainer screws underneath. All-in-all should take no more than ten minutes. Brake light strip is £96 and only availble from OPC so be careful! Migration info. Legacy thread was 11057

This is a source reference. Confirm exact model applicability in the original material.