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911uk

TT Strange Start-up noise

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

Discussion summary

YOUR RESEARCHTT Strange Start-up noise

Leading reported evidence

Replace air pump without removing engine assembley

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
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Unsuccessful attempts
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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.

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Suggestion

You could change the air pump without removing engine assembley...

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TT Strange Start-up noise
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Leading evidence: 'Replace air pump without removing engine assembley' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace air pump without removing engine assembley' (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.

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

Frequently discussed actions (1)

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

Replace air pump without removing engine assembley

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

You could change the air pump without removing engine assembley...

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TT Strange Start-up noise
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.

7 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: 20261026T181445Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

This has probably always happened but the other day, I started my TT up after being left for a few days and suddenly realised Id forgotten something in the house. So as I switched off, I noticed a high pitched spinning sound still continued after the engine was off. I tried this again after the engine was upto temperature and it just switched off as normal, no weird noises. Is this normal? If so could someone explain?

POST 2Original post

I noticed mine does that sometimes can't say as it sounded like a "bad" noise not sure what it is but it did not worry me. sorry this is not much help other than to let you know someone else with a TT has the same noise Nevyn

POST 3 / ORIGINAL POSTEROriginal post

LOL - Well I'll assume everything is ok then until someone comes along and tells me otherwise. At least you knew what I was on about - Thanks :thumbs:

POST 4Original post

Hello Could be the secondary air injection pump spinning down....this blows air into the exhaust area to heat the catalytic convertors quickly...does not work when warm probably runs for 45 secs- 1min. Mike

POST 5 / ORIGINAL POSTEROriginal post

I'd no idea I had one of those thingys but it certainly sounds like a good explaination - Thanks. Something else to cross off my list of things to worry about!

POST 6Original post

Mike I presume this is where the EGR valve sits (Exhaust Gas Recirculation) Mine was getting a little noisy and I was advised it was an engine out job to rectify although if you could live with it it was not too much of a problem.

POST 7Original post

Hello You could change the air pump without removing engine assembley... Mike

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