One or both of the front wheel bearings has gone and makes the usually noise but only intemittently, therefore it is difficult for my garage (not volvo dealer) to identify which one or if both are at fault. With the high cost of the parts involved I only want to change one if only one is faulty. Mechanic says as it is auto model it is not possible to spin wheel and check which one is at fault, so he wants to change both or take pot luck. Any ideas please. Thank you - ****
Thats an easy one mate. jack one side of the car up so one of the front driving wheels is off the ground. then run the engine in gear and your wheel which is lifted off the ground will turn. you can then check eachside individually. i thought your mechanic would know this, ask him why, or is it he just he wants to become rich with people like yourself who dont know these things? try finding either an honest mechanic or a one who knows more about cars !!!
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Most likely causes:
Front wheel hubs need replaced (do both at one time)
Front rotors warped or worn (change rotors and pads both wheels together)
The noise from the brakes dragging or the wheel bearings humming gets picked up by the abs sensors in the hubs before you can hear them. A few hundred miles later, the problem will get worse enough to hear while driving. Wheel hub replacement best done on a lift with an enormous impact wrench.
Felix any noise coming from the front wheel while turning leaves me thinking front constant velocity joint if the car is front wheel drive. With the abs light on I would take down the front driver side wheel and check the brakes for wear along with the front wheel bearing assembly for play or loosness, Check for the sensors to make sure they havent came off and are rubbing your rotors as you make your turn. It can be a number of things. Usually when its the front constant velocity joint it makes a popping noise as if something is binding. As for the front wheel bearing assembly it could make noises usually after the car has been ran down the road and heated up the bearing then it will sing to you. But as you mentioned about the noise only during turning I would lean towards constant velocity joint or sensor hanging and rubbing the rotor, Its only one way to find out. Hope this helps.
first thing to come to mind is a wheel bearing, being a noise that 'rumbles'-jacking it up, one wheel at a time and turning by hand might reveal which wheel is making the noise. Does the noise 'change' with speed, or braking? Noises are tough over the internet, but your description leads me to think they need to be checked first.
I would find the OEM Cat design.
I know you want to avoid the dealer one
due to cost.
I would think Walker should make it,
check their web site and your local
If you get something different, then
maybe the wires won't reach etc
hesitation is probably down to gearbox fluid being low bearings can be a nightmare but in best case u just need to take the hub off and get the bearings pressed out. if u take the hub off yourself and take it to sum were to get pressed u looking at an hours labor and w/e the bearings cost if they come out easily
this sounds like the bearing in the thermostatic cooling fan has worn possibly lift bonnet with car started keep hands out and look for a fan on the front of the radiator the are usually black plastic and are easily replaced and become noisy when worn hope this is helpful glenn....
sounds like c/v axles (front drive shafts) they will make a clicking sound normally when turning sharp and accell at the same time at slow speeds / look at the axle boots and look for grease on the inside of the front wheels leaking out the axle boots