Vibration at speed Octavia RS 2015

[Domas]

Hello guys,

 

I have a 2015 Skoda Octavia RS 2.0 TDI. I was planning to leave on a trip tomorrow therefore I have decided to balance my wheels. Done that yesterday. After balancing I started experiencing vibration above 120 kph. The vibration is constant and does not increase under load (acceleration), it is only related to speed. The speed increases - the vibration too. It does not change when I shift to neutral. I have rebalanced the wheels since then once. The vibration remains the same. I have tried to switch rears to front, no difference. I have even changed my wheels with other Skoda, vibration continues. The repair shop checked everything, bearings, bushes, springs, engine, transmission mounts. Everything is OK. I went to the specialised transmission service. After the test ride mechanic guaranteed that it is not related to the transmission. But it may be related to the driveshaft. Tomorrow I am changing my driveshaft inner cv joints. Right CV joint has no play, left one has a very very minor one. The mechanic says it should not produce such a vibration, but I am changing it anyways. I am left stranded. I needed to leave for a trip tomorrow, but now I cannot. Since I am in a rush, I hope you have useful suggestions.

 

sincerely

Domas

Edited 10 August, 2021 by Domas

[TomTewkesbury]

My post from a couple of years ago. Don't know if you looked at bearing... 

 

Hi this sounds exactly like the sound I was getting (although it was only at 70+) when I bought my second hand vRS earlier this year from a dealer. 

 

It turns out that it was the front wheel bearing so I'd suggest that gets checked first. 

 

It didn't make sense that it could be that because it was a slow deep rhythmic pulse but they replaced the bearing under warranty and that completely fixed it. 

[Domas]

Fixed the car today. All the bearings were checked twice. Both inner CV joints were replaced (driveshafts remained original). This fixed the problem. Although there was no visible wear on CV joints, no play, but it seems like it fixed the problem.

[vRS18j]

On 11/08/2021 at 10:59, Domas said:

Fixed the car today. All the bearings were checked twice. Both inner CV joints were replaced (driveshafts remained original). This fixed the problem. Although there was no visible wear on CV joints, no play, but it seems like it fixed the problem.

 

I'm having the same vibration issue at speed , doesn't feel like a wheel but will start with checking/balancing wheels 

 

[rangor_g]

My 2015 Octavia Scout has something very similar. I'm going to post a new thread on it.