YOUR RESEARCHWhistling noise while driving
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
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1 matching discussions · 15 captured posts examined · 1 partial discussions
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.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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Generation: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So 4 weeks in the new c4s and the engine whistle pretty much consistently and pretty loud (high pitch whistle). My old one used to do that a bit but not consitently and not as loud. Anything to worry about? Thanks
Have you checked to see if George Fornby is hiding in the back?
:hand:
I'm no expert, but the AOS is known to whistle as air rushes past a split in the diaphragm?
Just found this, this is exactly what i experience http://www.911uk.com/viewtopic.php?p=852925
I had an annoying whistle on mine and it turnef out to be a very slightly misaligned airbox. Rick
Yup .. when it whistles take the oil filler cap off .. if it stops then AOS. If you struggle to remove the cap then again its an AOS.
Thanks! Out of interest Is it possible to have a failing aos without smoke?
Yup .. Boxsters do it all the time .. no idea why its normally them but the whistleing and a hard to remove oil cap is a normal feature of an AOS on them . EDIT .. There are 2 types of AOS failure .. it can block or it can go totally open .. one causes smoke , the other a vacumn hence the noise .
Don't worry be happy :lol:
Great thanks so is it necessary to fix asap? Or not as urgent?
If it was smokeing then i would say asap .. excessive oil in the cylinders can hydraulic .. serious damage at that point .. a blocked AOS doesnt allow Any crank gasses to get burnt . Ive seen cars that have had this fault for monthes with no ill effect .. In all honesty though i cant say that a fault is safe to leave what ever it may be .. i do this for a liveing so i am a little bit more liable than most of you here if i give incorrect advise .
:thumb: Great I will try and get it sort as soon as I can then
For the record, took the car to Matt at Fearnsports, it turns out it's the air con pump that is c:
That was a rather good as an ear worm placement. Never saw it coming
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