fullymatted.
Back to search
PistonHeads

What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK

Add to repair workspace
Open repair workspace
Original source
8 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHWhat's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK

Reported or suspected cause

top mount bearings - unusually

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

Turned out to be top mount bearings - unusually for a GT3 these items are relatively cheap to replace; so you may escape the dreaded £10k refresh for another season...

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK
Frequently discussed work

Check suspension/steering/drivetrain hardware

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

The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose.

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK

Suggestion

The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose.

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK
Read full discussion summary

Leading evidence: 'top mount bearings - unusually' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'top mount bearings - unusually' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check suspension/steering/drivetrain hardware' (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 · 8 captured posts examined · 1 partial discussions

Compare 2 other evidence results

Check suspension/steering/drivetrain hardware

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

The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose.

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK

Suggestion

The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose.

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK

Replace ; so you may escape the dreaded £10k refresh

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

Turned out to be top mount bearings - unusually for a GT3 these items are relatively cheap to replace; so you may escape the dreaded £10k refresh for another season...

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK
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 suspension/steering/drivetrain hardware

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

The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose.

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK

Suggestion

The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose.

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK

Replace ; so you may escape the dreaded £10k refresh

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

Turned out to be top mount bearings - unusually for a GT3 these items are relatively cheap to replace; so you may escape the dreaded £10k refresh for another season...

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - PistonHeads UK
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.

top mount bearings - unusually

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

Turned out to be top mount bearings - unusually for a GT3 these items are relatively cheap to replace; so you may escape the dreaded £10k refresh for another season...

Original post Read captured discussion
What's this knocking noise on my 996 GT3.2 ? - Page 1 - 911/Carrera GT - 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.

8 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: 20261027T061840Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Top mount or something else? GT3 996.2 with 40k The knocking sound comes and goes. Some journeys I won't hear it for days, then sometimes while coasting stuck in traffic it's loud, as you hear in the link. Drivers side front. Hope the link works, it's the first vid I've ever put on You Tube. Check out this video on YouTube: http://youtu.be/N16gtO5zjTM

POST 2Original post

Damper rod bushes failing. Top mount spherical bearing worn. Anti roll bar drop links worn. Coffin arm inner bushes dry. Or any combination of the above.

POST 3Original post

Got to agree with Slippydiff. Arrange to get the car to a highly regarded Porsche shop and on a lift. The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose.

POST 5Original post

lemmingjames said: 10k refresh right there with that sound

POST 6 / ORIGINAL POSTEROriginal post

Rockster said: Got to agree with Slippydiff. Arrange to get the car to a highly regarded Porsche shop and on a lift. The tech then can check all the suspension/steering/drivetrain hardware for something worn out or loose. The problem is, it only happens a few times, and PARR have had a look once, and said it MIGHT be the top mount. Sounds like a can of worms to me lol

POST 7Original post

lemmingjames said: 10k refresh right there with that sound I thought the same .........

POST 8Original post

My 96.1GT3 had these symptoms. Turned out to be top mount bearings - unusually for a GT3 these items are relatively cheap to replace; so you may escape the dreaded £10k refresh for another season...

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