Porsche Club GB

intermittant brake servo!

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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHintermittant brake servo!

Leading reported evidence

Replace "

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
Edit : There was a Technical Bulletin issued about it: "11/01 - 4470 - Brake Booster Seal at Firewall, Changed".
Original post Read captured discussion
intermittant brake servo!

Frequently discussed work

Fill with water

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
Early 996 and Boxsters suffered from the seal on the brake servo splitting, and it filling with water.
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intermittant brake servo!

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Leading evidence: 'Replace "' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill with water' (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.

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1 matching discussions · 7 captured posts examined · 0 partial discussions

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Fill with water

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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
Early 996 and Boxsters suffered from the seal on the brake servo splitting, and it filling with water.
Original post Read captured discussion
intermittant brake servo!

Replace seal

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
However, if the servo is badly rusted inside, which is common, it will need a new servo, rather than just replacing the seal.
Original post Read captured discussion
intermittant brake servo!

Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Fill with water

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
Early 996 and Boxsters suffered from the seal on the brake servo splitting, and it filling with water.
Original post Read captured discussion
intermittant brake servo!

Replace "

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
Edit : There was a Technical Bulletin issued about it: "11/01 - 4470 - Brake Booster Seal at Firewall, Changed".
Original post Read captured discussion
intermittant brake servo!

Replace seal

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
However, if the servo is badly rusted inside, which is common, it will need a new servo, rather than just replacing the seal.
Original post Read captured discussion
intermittant brake servo!

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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.

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

Porsche Club GB: 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: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi everyone, pushing on up the M11 thismorning, came up on some slower moving cars applied brakes and no servo!!! Can report not much happens without function servo apart from a trip to the launderette! Intermittant for the next half hour, parked up for 10 mins and seems to be behaving now....any ideas or should I just take straight round to dealer?

POST 2Original post

Early 996 and Boxsters suffered from the seal on the brake servo splitting, and it filling with water. It sounds like it might have happened to yours. I would get it looked at as soon as possible. Edit : There was a Technical Bulletin issued about it: "11/01 - 4470 - Brake Booster Seal at Firewall, Changed". If you would like details, drop me an email. However, if the servo is badly rusted inside, which is common, it will need a new servo, rather than just replacing the seal.

POST 3 / ORIGINAL POSTEROriginal post

Hi Richard, thanks for quick response and clarification.....thogught it must have been a leaky seal or something, any idea how much to fix? Andy

POST 4Original post

Interesting thread. Then we first got our Turbo both my wife and I thought the initial bite of the brakes was not as good as the 06 Astra estate we use to lug the family. The brakes themselves on the Turbo feel strong but need more pedal pressure than the Astra. Could this be a leaking servo too? Is there an easy way to check? I asked the dealer to look into it but he said that was how they are supposed to be. B

POST 5Original post

What you describe is perfectly normal. Porsche don't "over servo" their brakes, to give more feel. I always put Mrs H through the screen when I drive her Civic! The seal was redesigned long before the Turbo was introduced.

POST 6Original post

I am going to buy Mrs H a crash helmet for next Xmas.

POST 7Original post

Thanks Richard, I had hoped that was the case and I have to agree about feel......

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