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Wind Whistle At Speed


Andrew-k
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Hi,

I'm a new member and, at the end of January, took delivery of a 1.6 Focus Zetec automatic (petrol). Having got the car "run in" I find that, at speeds of 60-70 mph (less in windy weather) a loud and almost continuous penetrating whistle starts up and appears to be coming from behind the dashboard on the passenger side. The people at the dealership are completely at a loss as to what the cause might be (I'm taking the car back again in two days time!); can anyone suggest a possible solution to this? As it stands at present, taking the car on a long journey would be mental torture and there seems no end in sight to the problem. At present I am a very exasperated Ford-owner.

Andrew-k.

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Does it go away if you hit the 'recirculate' button? I say that because the pollen filter housing is behind the dashboard on the passenger side.

Other suspects would include some issue with the airbox, or a split hose (though, extremely unlikely on a brand new motor).

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Thank you for the suggestion about the recirculate button, I will try that when I get the chance or tell the garage. Problem can be finding the time to go out and find a road where I can do 70!

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Are under the carpets wet ide say missing seam sealant if youre positive its behind the dash also adjust the heating knob see if that helps most mk2 have a wind whistle at speed but its just the design on the mk2.5 they used more insulation and thicker door seals

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Get similar on my Mk2.5, although it's not that loud and I can only hear it when the radio is off.No sign of any water getting in.

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Many thanks for the comments/suggestions. Unfortunately hitting the Recirculate button didn't make any difference; the car is with the dealership at present. There is no way that it is any sort of normal wind whistle - nobody who has heard it has suggested that - and anyone who has heard it thinks it is coming from behind the dash on the passenger side, as in my original post. The front wheel-arch, door seals etc. have been checked and are OK. Any further suggestions, please?

Andrew-k.

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to be honest accept it i believe its from outside and due to the aerodynamics since so many focis have the same issue live with it most of us do i cant say its that bad

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Artscot 79, you haven't heard it! And it seems, moreover, as if something is loose because the noise reacts sometimes to vibrations in the road.

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Theres not much back there to be honest all i can think of is the pipework to the heater matrix wiring through the grommets or a faulty window seal without ripping the whole dash out its guess work you could take the glove box out and have a good look up behind the dash

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Fingers crossed - the problem seems to have been solved. Eventually the dealership traced the noise to the door-mirror housing; it wasn't coming from behind the dash after all! There is nothing apparently wrong with the original housing but changing it stopped the noise and I had a brief run at speed last night and could detect no trace of it. Thanks again, anyway, for the suggestions and comments.

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What exactly did they change, the entire mirror?

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I believe so, or at least the entire housing.

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