9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCrazy whirring noise at the front
Reported or suspected cause
undertray at the front wasn't fitted properly
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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Discussions that report identifying a cause
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
But turned out to be the undertray at the front wasn't fitted properly!
Leading evidence: 'undertray at the front wasn't fitted properly' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'undertray at the front wasn't fitted properly' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Install properly' (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.
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
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Performed · outcome unconfirmed
But turned out to be the undertray at the front wasn't fitted properly!
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
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Performed · outcome unconfirmed
Wheel bearings are cheap on ECP or Cp4Less especially with a weekend discount code, mine cost about £300 to fit in a local garage (they also fitted some lowering springs for no extra cost :thumb
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
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Performed · outcome unconfirmed · Original poster
and they ran when it was restarted after the meeting.
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 suspect a cause
1
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Suspected cause
It could be something else but it sounds like the issue I had, I lived with it for several months until the sound became too obtrusive and the issue was easy to identify.
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
Wheel bearings are cheap on ECP or Cp4Less especially with a weekend discount code, mine cost about £300 to fit in a local garage (they also fitted some lowering springs for no extra cost :thumb
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
Wheel bearing noise often changes tone when cornering slightly, get the front wheels off asap to be sure you haven't got a broken spring rubbing on the tyre.
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
It could be something else but it sounds like the issue I had, I lived with it for several months until the sound became too obtrusive and the issue was easy to identify.
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.
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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Just spent a couple of hours on the road (mostly motorway) in a friend's 2003 996 targa driving to/from a Porsche owners meeting. I was expecting the car to sound pretty much like my 2003 coupe, but it developed a really unusual whirring/droning noise coming from the front of the car. The noise seemed speed dependant, but otherwise unconnected with the engine. At the risk of sounding a bit stupid, I would say it sounded rather like the radiator fans were being driven by the airflow....i.e. faster =louder.
The fans were running, but not loudly, when we stopped the car in the car park for the meeting ..... and they ran when it was restarted after the meeting. All instrument cluster readings were totally normal at all times.
Is it the fans being actuated when they should not have been, coupled with being a bit noisy with age? And the sound was rather noticeable because normally they are not on, well not at this time of year? At lower speeds there was not much, if any noise, but at higher speeds maybe the sound was the fans running at high speed? Something is not right, here .... any suggestions?
Won't make much whirring noise at low speed or if you jack front wheels up and spin them and you probably won't feel any play if you rock the wheels.
You will notice the noise most at higher speeds, put the car in neutral and it will still be there, Rev the engine but the whirring noise will remain constant and gradually reduce as the car slows.
Wheel bearings are cheap on ECP or Cp4Less especially with a weekend discount code, mine cost about £300 to fit in a local garage (they also fitted some lowering springs for no extra cost :thumb
.
It could be something else but it sounds like the issue I had, I lived with it for several months until the sound became too obtrusive and the issue was easy to identify.
I think 911munKey has put his finger on the problem, Targalout.
I don't think you can complain about the originals lasting 130k miles!
I agree that the 'put in neutral at speed' test would give the definitive confirmation.
Wheel bearing noise often changes tone when cornering slightly, get the front wheels off asap to be sure you haven't got a broken spring rubbing on the tyre.
Wheel bearing or if a C4 then possibly front diff bearings .. its a drone noise that gets louder with speed .
A hard corner will usually change the tone of the noise as more load is applied to the wheel bearing .
It's not going to break up .. it's not a massive problem as such but it does need attending to ..
if lucky then spinning the wheels on a ramp and holding your hand on the coil spring and you can feel the roughness or at least hear the noise .
might be a bit left field, but you mentioned a droning that increased with speed.
When I had a 996 C4s I had a droning coming from the front, thought it might be the front diff. and was all set for an expensive bill
But turned out to be the undertray at the front wasn't fitted properly!
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