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S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models |
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rotational knocking sound from frontViews : 372 Replies : 3Users Viewing This Thread : |
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Mar 15th, 2024, 12:15 | #1 |
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Last Online: Mar 15th, 2024 12:15
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rotational knocking sound from front
We haven't used our V70 for a while. I drove it the other day for the first time in around 4 weeks and immediately heard a rotational knocking sound which appeared to come from the front.
The knocking frequency increased with vehicle speed. It occurs whether driving or applying the brakes and it also occurs if I knock the car into nuetral and coast (it's an automatic). It sounds like the knock is occuring once per rotation of the wheels like there is something stuck on the tyre. I have jacked the car up and rotated each front wheel by hand and can't feel anything. I have inspected the surface of the wheel for nails etc and there is nothing present on either side. I have also looked at the discs and nothing seams trapped in the brakes (again turning by hand does not reveal any sound). I am a little confues how to work out what the cause is beyond this. Has anyone come across this before? or has anyone got any ideas. What I find most confusing is it has just started. |
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