2015 V60 D4 CC AWD background vibration
On my way to Volvo600 yesterday I noticed a thrumming (for the want of a better word). It starts about 60mph and goes away once in to the 80mph+ Speeds. There’s more vibration on acceleration and it seems to go away on the over run ie like going down hill. Other than that it thrums away to itself in the back ground. I’ve traveled the internet and not really seen any definitive solutions.
TT |
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Any thrum sound to me hints of bearings.. Therefore my first thoughts are wheel bearings, but the sound disappears on over run, which hints at transmission, as the wheels will still rotate the same whether or not on the over-run but the transmission would be loaded differently, on power and during over run .... so thats my opinion. From there its gearbox issues and in the case of AWD... bevel gear....???? Other parts of the AWD system propshaft, haldex; rear diff are reasonably sound, although I have read cases of prop bearings becoming noisey. just my 2d. Cheers Bob |
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There’s no warnings snd I don’t have Vida. I’ll go through the simple stuff and work from there |
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Not sure if cloned Vida would read your car either...2015MY is fine ( my 2014 V70 is 2015MY and can be read fine) but think 2016MY is a car too far. Cheers Bob |
Cheers
I don’t think I’ve described the thrumming noise properly. It’s not like constant thrumming but it’s more of a regular pulsing thrum, it’s hard to describe really. The best way I can describe it is like a Thrummmm, Thrummm, Thrummm that comes and goes between 60 and just above 80. Im going to illuminate tyres first and see where it goes from there. TT |
It was a tyre…… Phew!! Did a swap about and fitted some spare wheels I had and the noise has gone… Yay!! Thanks for the input
TT |
Don't understand how tyres cause an unexplained "noise". In my mind a tyre noise is either there or not, and if it is, does it not happen as soon as you put the tyres on??? Surely (to me) it don't creep up on you??
But it must do, as I have read various reports about noise/rumbles which turn out to be tyre related. I'd be interested to know what brand of tyres you ran, as I have never experienced this effect. That said I usually run Michelin ( on my D5) and F1 Goodyears on my now dead T5 & AWD R. Cheers Bob |
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