Severe bearing noise from front wheel bearing/cv joint area.Cv joint still lubricated,I tend to think axle support bearing is dry & on the way out,but only assuming.How does front wheel bearing come out of hub to leave cv joint in situ? This fault is in a 1998 deawoo lanos.Any assistance would be appreciated>

Sounds to me like you have bad universal joint bearings in a CV joint.

Roar can often be associated with failing wheel bearings, but they usually don't cause severe vibration, maybe a little bit when turning. Vibration in the drive train is most often associated with struts and/or CV shafts/joints going bad. If you are sure the struts and strut mounts are good, then I'd have the CV joints looked at.

Grinding noise upon turning is normally one of two issues. First, and most often, it is caused by a worn out outer CV joint. If your vehicle has more than 50000 miles on it and the axle shafts have never been replaced, this is what I would suspect first. In addition, CV noise will be louder when turning under power (gas pedal pressed) than when coasting into a turn. The other possibility is a front wheel bearing assembly. These are not as common, but do wear out as well. The wheel bearings will usually make no noise when going straight, but will make noise upon even the slightest side to side turn. CVs on the other hand, usually grind only when going into corners or making left or right turns. If you suspect a CV joint, but don't have high mileage, you could have a torn CV boot that resulted in the grease that lubricates the joint being depleted and causing the noise. You can inspect the out boots visually for tears....grease leaking out usually leaves telltale spatters in the wheel wells also. Replacement of the CV joint can be done, but it is usually cheaper to replace the entire axle shaft as they are serviced as a unit.

check all your ball joints to see if they need gresed as well with the wheel bearings

Have you checked the front wheel bearings? I've seen similar problems on several front wheel drive cars. On my first experience, we also started by changing the CV joints only to find it did not solve the problem. We then though it was a transmission problem.... wrong again. Finally checked the front wheel bearings (Both sides) and found the passenger side was making the noise. Bearing replaced (not cheap by the way) but solved the problem.

CV joints tend to be much noisier on tight turns. Wheel bearing on the other hand, tend to be noisiest when straight.
But yes, it could be a pinion bearing instead.

If you have locking front hubs, then unlock them.
It is still happens, it is not the front differential.

Wheel bearings will have play you can feel through the brakes being spongy, vibrate, and through play if you jack it up.

CV joints can be taken off, apart, cleaned, inspected for spauling and pits, and regreased. You are supposed to do that anyway. So there is no reason to just replace them unless you actually see the metal flakes and grinding.

Differential is the hardest to see and most expensive, so save for last. Drain the oil into a clean pan, to see what comes out.

It sounds like the CV joint, no they are not supposed to be loose, free to move but not loose like you describe, sort the CV then look at the wheel bearing as I imagine all the noises will disguise others

Does sound stop when you turn LEFT?

Turning RIGHT puts the heavy load on the LEFT front wheel.
That initially STOPPED the noise, correct? So why did you change L?

Turning LEFT puts the load on the RIGHT. Did you change the RIGHT?

Let's say this:
If turning RIGHT stops the noise, it's the RIGHT one that's likely bad.
If turning LEFT stops the noise, it's the LEFT one that's more likely bad.

Make sense? Turning RIGHT loads the LEFT wheel; and vice-versa as the WEIGHT SHIFTS AWAY FROM THE TURN.

More than likely it is what some folks call a CV joint problem, not wheel bearings. Try backing up and then going forward to see if "clunking sound" or a sharp "bang" is heard. Wheel bearings and CV joints only work if smooth. Sometimes a BEARING RACE is bad. Also, a bad spindle / part of the CV joint / transaxle assembly worn or badly machined. If in a WET ENVIRONMENT especially, u may want to try marine grade grease or teflon-added grease.




Does sound come from POWER STEERING PUMP area?

Beyond the issues of dry wheel bearings and CV joints, various points in the suspension (front and rear) have rubber pivot points that get squeaky when moved. Try pushing down on each corner of the car to try to locate the area of the noise. Is it worse on rough roads or smooth? Make sure that all of the lug nuts on the wheels are tight. Lastly, doors, hood, and trunk lid can squeak if they move while driving. Silicon spray lubricant works on all rubber surfaces. Wheel bearing grease works on wheel bearings and CV joints--look for wear and replace any damaged part.

Try checking the hub's and bearing's, when bearing's go bad they tend to make a squealing nois.