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Old 05-05-2005, 04:59 PM   #1
richo77
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Talking Noisy XR8

Hello,

Whenever I give my car a bit of a rev such as when overtaking and the speed exceeds 120km/h or so, when i let go of the throttle there is a high pitched noise which sounds oddly like an alarm of sorts which continues sounding until you go back on the throttle or slow down to around 100km/h.
It is isnt the speed alert and i've turned off the stereo so I have no idea what it is.. but it seems to be coming from the centre console/dash area.

I was reading an old issue of Motor from 99 when they took an AU 1 XR8 around Oz and they said a similar thing happened with revs at 3500rpm - 160 km/h but couldnt describe the cause.

Any ideas? Ford doesnt know!

cheers
Nathan
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Old 16-05-2005, 07:16 PM   #2
Pete A
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I gather your car is AU1. I had AUII for 4 years and my son has AU111. Never heard of this problem. Might be fooling you on where the sound is coming from. If you have the Windsor 5.0L V8 then I would suspect something stupid like the force air inlet manifold has a problem at certain stress levels.

Could also be something stupid like the fan belt vibrating or a bearing in the engine somewhere.

I know the V8's pretty well but if you have a 6 - sorry can't help.
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Old 16-05-2005, 07:37 PM   #3
richo77
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Hey there thanks for the reply

Its an AU XR8 Series 3 - sillouette with polished rims and no mods other than a K&N panel filter (which makes no noticeable diff to power or fuel economy). :eclipsee_
I'm pretty certain the noise is coming from the dash and is so annoying and instrusive! Motor called it a 'wicked internal buzz'. I'm thinking of pulling out the dash to see if it happens without it in. If thats not it then i've got nfi!!

Regards
Nathan
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Old 16-05-2005, 08:01 PM   #4
cArSiK
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your not the first person to complain about this....so i suspect alot of them do it? I know my AU2 XR6 dosent do it...

James
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Old 21-05-2005, 09:53 PM   #5
RspecAU
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The only thing i could think of is it maybe a leak in the vaccum system to the heater controls...if the noise is coming from the dash but i'm only guessing
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