Humming Sounds When Going Straight or Turning Left

[Clan]

Originally Posted by Welton

Funny you should say that, our Citroen recently had a front wheel bearing changed - it turned out to be the opposite side of where the noise sounded to be coming from.

One simple proven test is to raise each wheel off the ground and whilst holding onto the road spring with one hand - spin the wheel with the other, you will 100% feel the roughness of the bearing through the spring.

My earlier post assumed all this had been checked

well in my experience what i said goes for volvos ... which is what we are dealing with here of course .. good thing about the spring test i have done that before now , but when a volvo wheel bearing starts getting noisy it can still be very smooth . 👍

[Badger247]

Am having the same problem with my c30 d, I've changed the left wheel bearing, replaced my drive shaft, checked all ball joints and swapped my tyres round, yet the humming noise is still there, it's driving me insane, volvo parts are not cheap lol, has anyone got a solution
Thanks

[eric19371]

Originally Posted by FunkyMelon

Give the brake disc guards a prod and see if the problem gets worse or better.

Guards are okay. We had that problem once before and it sounded a lot worse than this. Good idea though.

[eric19371]

Originally Posted by Clan

Get the idiots to change the right hand bearing free of charge, have they no experience at all ?
The bearing gets noisier with more load on it and vice versa ! I despair more and more these days with people's incompetence !

This is what I thought, even though the sound is coming from the left. If this bearing replacement doesn't sort it I will change the FOS bearing. They are saying it could be the transmission but I doubt that very much as it goes quiet when turning right. I am getting annoyed with this and I am starting to doubt their competence.

[eric19371]

It is fixed. It was the inner driveshaft bearing. As soon as that was changed the noise went away. Lovely. Whole thing including new front pads and rotors was £500 which I thought was reasonable.

Road noise is louder on my V50 but that is almost certainly the tyres (currently Falken) as it is consistent so when they expire I will change them for a more premium brand. Any recommendations?