2017 C4 grand picasso 1.6 diesel thumping noise when turning at 30plus mph

[Aj99]

Hi all,
2017 c4 grand picasso 1.6 diesel is making consistent thumping noise when turning at 30 plus MPH its is directly related to the speed and comes from feon driver side.
Below has been done but still no luck so kind of stuck and need help
Shock absorber and mount bearing etc replaced.
Ball joint, drop links tie rod end lower arms including bushing replaced
Driveshaft replaced
Any assistance woukd be greatly appreciated
Thanks

[mickthemaverick]

Does it happen when turning left or turning right, or both?

[Peter.N.]

If it only does it when cornering in one direction its likely to be a wheel bearing, which is what I think Mick was leading up to (sorry Mick). It will normally be the one that has the weight being thrown on it.

Peter

[Aj99]

IHi
Thanks,
t does it on both sides. But left is a little louder than right.
I had the wheel beaing checked there is no play or noise

Thanks again.

[danlat1415]

Have a look at the anti-roll bar bushes. They get worn out and can cause similar symptoms, especially on a 9 year old car.

Unfortunately they're sealed bushes on the C4, so you either need a garage willing to modify them to change the rubber bush inside, or replace the whole bar unit as one.


Also, possibly the engine mounts, if the weight is shifting to the side as you turn a corner at speed.

[Aj99]

Thanks
Will get them checked and update.