Pelican Parts

fluttering noise from rear left

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YOUR RESEARCHfluttering noise from rear left

Leading reported evidence

Run 1.5, 1.6bar

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed · Original poster
And also, im able to maintain my boost level (odometer shows 1.2 bar, but i am running 1.5, 1.6bar on external boost gauge during tuning).
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fluttering noise from rear left

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Leading evidence: 'Run 1.5, 1.6bar' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run 1.5, 1.6bar' (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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Frequently discussed actions (1)

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Run 1.5, 1.6bar

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
And also, im able to maintain my boost level (odometer shows 1.2 bar, but i am running 1.5, 1.6bar on external boost gauge during tuning).
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fluttering noise from rear left

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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.

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

Pelican Parts: 1 discussions

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Generation: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi Guys, A big hello to you guys! im driving a 997 turbo tip and i would like to share a problem im facing right now; This happened 2 weeks ago. I noticed a fluttering sound from the rear left whenever i throttle. I have listed down the exact details; 1. light throttle on even road is fine, sound appears after half throttle or going up slope. On WOT, fluttering is very noticeable. 2. initially, the mechanic and i were bewildered by the sound. At first we thought it could be a boost leakeage, however subsequent checks on all hoses proved otherwise. And also, im able to maintain my boost level (odometer shows 1.2 bar, but i am running 1.5, 1.6bar on external boost gauge during tuning). For eg, in gear 1, 2, 3, im able to hit 1.2bar.. 3. Things took a turn for the worse today. 1st gear, im only able to hit 0.7 then 0.6, 2nd gear 0.9 to 0.7, third gear 1.0 to 0.8bar. Something is very wrong now. This was done on highways in the early morning. After sharing my problems with my Pfriends, i was told that the wastegate or the diverter valve could be the culprit, due to wear and tear or some other reasons. Anyone here encountered this issue before? I cant send the car back to agent as its modded (exhaust, headers, ecu, brv, ipd plenum) and they will not entertain me unless i change them back to stock parts. Anyone?

POST 2Original post

The really sounds like the diverter valve. They are prone to failure. I had one go on an Audi TT and it was like you described. On a 930 I used to own I had a billet version. There are several different places that make these.

POST 3 / ORIGINAL POSTEROriginal post

Thanks David for your inputs.. Another point to note is that im able to hit 300kmh and still going.. with no air gushing sound.. i could hear the fluttering during initial pick up but when it reaches 100kmh on light throttle the fluttering goes away, till you apply more gas. Anyone has similar encounters?

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