Having problems with your 2006 Volvo S40 ?
I get a loud humming sound when my 06 volvo s40 is moving straight or to the left. Could this be the wheel bearings or the cv boot?
I would say it's the bearing because the CV joints will usually make a clicking noise when turning right or left........Hope this helps.
Repair Help & Product Troubleshooting for 2006 Volvo S40
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