13 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
Reported or suspected cause
hinge mechanisms
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
I've had a couple of 911s (991.1 and 991.2) with simlar noises which proved to be faulty hinge mechanisms on the rear engine lid which were replaced under warranty.
991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
Read full discussion summary
Leading evidence: 'hinge mechanisms' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'hinge mechanisms' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check these last night and everything seems ok' (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.
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
Had something similar - turned out to be a loose (completely undone) brake calliper bolt.
991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
Check these last night and everything seems ok
Performed · outcome unconfirmed
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 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 · Original poster
I checked these last night and everything seems ok.
991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
Replace under warranty
Performed · outcome unconfirmed
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 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've had a couple of 911s (991.1 and 991.2) with simlar noises which proved to be faulty hinge mechanisms on the rear engine lid which were replaced under warranty.
991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
gt3 now has the same thing
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.
991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
Replace under warranty
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've had a couple of 911s (991.1 and 991.2) with simlar noises which proved to be faulty hinge mechanisms on the rear engine lid which were replaced under warranty.
991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
Reported and suspected causes (3)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
hinge mechanisms
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
I've had a couple of 911s (991.1 and 991.2) with simlar noises which proved to be faulty hinge mechanisms on the rear engine lid which were replaced under warranty.
991 metallic 'clang' noise over bumps - Page 1 - Porsche General - PistonHeads UK
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.
13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 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: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My 991.2 S has developed a noise when driving over bumps in the road. It's only audible from the outside of the car or whilst driving with the window open.
The noise seems to be from the rear of the vehicle, and sounds very metallic - like two spanners banging together.
I had the car over at Center Gravity on Monday and they couldn't find anything wrong or broken (they transformed the handling of the car BTW).
I looked on Rennlist where people have discussed loose engine covers, missing fan grommets etc. I checked these last night and everything seems ok.
Any ideas what it could be?
I've had a couple of 911s (991.1 and 991.2) with simlar noises which proved to be faulty hinge mechanisms on the rear engine lid which were replaced under warranty.
Had something similar - turned out to be a loose (completely undone) brake calliper bolt. Probably undone earlier in the cars life and retightened rather than being replaced.
willisit said:
I didn't see this originally but mine was a broken rear spring.
Just had a feel around and its sharp round the back with the coating worn off so i assume this will be it.
Thanks.
fistenburger said:
My 991.2 S has developed a noise when driving over bumps in the road. It's only audible from the outside of the car or whilst driving with the window open.
The noise seems to be from the rear of the vehicle, and sounds very metallic - like two spanners banging together.
I had the car over at Center Gravity on Monday and they couldn't find anything wrong or broken (they transformed the handling of the car BTW).
I looked on Rennlist where people have discussed loose engine covers, missing fan grommets etc. I checked these last night and everything seems ok.
Any ideas what it could be?
Can't help, but at least you know it's nothing to do with the suspension - CoG are so particular they will have found a problem there.
I had the same symptoms on my previous 991.2. OPC couldn't find anything wrong, but RPMtechnik found a broken rear spring.
Car felt fine to drive, the only symptom was the noise.
I suspect my GT3 now has the same thing.
fistenburger said:
I had the same symptoms on my previous 991.2. OPC couldn't find anything wrong, but RPMtechnik found a broken rear spring.
Car felt fine to drive, the only symptom was the noise.
I suspect my GT3 now has the same thing.
I have a GTS now but a GT3 prior to it and the front spring did the same at 13k miles!
I had a similar issue which i mentioned at a service time but the OPC couldn't find anything wrong. I persisted and they sent out their "Gold" technician with me and I drove the car over a speed bump. Straight away he said "leave it to me". There was a stone trapped in the rear suspension.
Same here - small stone trapped in the rear suspension. It wedges itself further and further down until you get a bang/clunk and it returns to the begining to repeat the process. Really annoying and took two trips to Porsche to fix it
