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Massive juddering under load - Page 1 - 911/Carrera GT - PistonHeads UK

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Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHMassive juddering under load - Page 1 - 911/Carrera GT - PistonHeads UK

Leading reported evidence

Replace very common issue

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
Will just needs a bit of grease or actuator replaced very common issue on VTG turbo.
Original post Read captured discussion
Massive juddering under load - Page 1 - 911/Carrera GT - PistonHeads UK

Frequently discussed work

Replace from most

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
Dealership have been great to deal with, which makes a freshing change from most!
Original post Read captured discussion
Massive juddering under load - Page 1 - 911/Carrera GT - PistonHeads UK

Read full discussion summary

Leading evidence: 'Replace very common issue' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'still there if i accelerate' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace from most' (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 · 9 captured posts examined · 1 partial discussions

Compare 2 other evidence results

still there if i accelerate

Suggestion or failed attempt

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 · Original poster
I pulled over when I could and restarted the car which clears the code but the issue is still there if I accelerate.
Original post Read captured discussion
Massive juddering under load - Page 1 - 911/Carrera GT - PistonHeads UK

Replace from most

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 · Original poster
Dealership have been great to deal with, which makes a freshing change from most!
Original post Read captured discussion
Massive juddering under load - 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.

Replace from most

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
Dealership have been great to deal with, which makes a freshing change from most!
Original post Read captured discussion
Massive juddering under load - Page 1 - 911/Carrera GT - PistonHeads UK

Replace very common issue

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
Will just needs a bit of grease or actuator replaced very common issue on VTG turbo.
Original post Read captured discussion
Massive juddering under load - 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.

still there if i accelerate

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 · Original poster
I pulled over when I could and restarted the car which clears the code but the issue is still there if I accelerate.
Original post Read captured discussion
Massive juddering under load - 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.

9 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: 20261026T144035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I literally just picked up a 991.1 Turbo S from non OPC dealer in central London. It took about 2 hours to get out of the 30s and literally on the first 70 I accelerated up and under load there is a massive amount of juddering from both front wheels - like it’s slipping and skipping over something really rough. I backed off immediately and it’s stopped. I tried again and both engine warning light came on and traction warning about 4 wheel drive . I pulled over when I could and restarted the car which clears the code but the issue is still there if I accelerate. I will be going back tot eh dealer to see if I can reject the car bit any items what it could be? I thinking it’s something like drive shaft/ differential

POST 2Original post

Tyres ok ? Same size and width ?

POST 3Original post

Given the engine lights and only occurring under load, I’m inclined to think it’s diff / driveshaft causing a measurable difference in wheel speed.

POST 4 / ORIGINAL POSTEROriginal post

It feels like that clutch slipping/judder. It’s very intense. It’s a PDK however of course

POST 5Original post

I’ve experienced similar symptoms - albeit not in a Porsche - with a failing steering angle sensor.

POST 6Original post

Probably just a sticky turbo actuator rod from sitting around. Will just needs a bit of grease or actuator replaced very common issue on VTG turbo.

POST 7 / ORIGINAL POSTEROriginal post

It’s off to Reading OPC on Monday so will know more then. On reflection it could be the engine as much as the PDK box. Dealership have been great to deal with, which makes a freshing change from most!

POST 8Original post

Sorry to hear of your troubles, but getting an OPC slot for Monday is outstanding ! The one down my way (colchester) would be more like 2 months wait or more if want a courtesy car !

POST 9 / ORIGINAL POSTEROriginal post

guyvert1 said: Sorry to hear of your troubles, but getting an OPC slot for Monday is outstanding ! The one down my way (colchester) would be more like 2 months wait or more if want a courtesy car ! I know! Something must of been cancelled last minute

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