Rear whinning noise under acceleration 1997 land rover discovery

A grinding noise suggests a bearing at fault or perhaps worn pads on the brake rotor.

However, the clunking noise you mention could also point to a problem with the drive shaft or differential.

The first thing you should do is to get under the vehicle and try twisting the propshaft back and forth. If there's any movement this points towards a worn universal joint on the propshaft. A worn universal joint can cause a clunking noise - particularly when pulling away. The vibration caused by a worn universal joint can also damage bearings in the differential and also to the splined ends of the axle shaft.

You're also going to have to remove the wheel from where the noise comes from and examine the end of the axle shaft/bearing.

The link below is of images of the rear axle:

land rover discovery rear axle Google Search

RAVE Manual Land Rover Forums Land Rover and Range Rover Forum

excessive noise from lower bellhousing. remove four torque converter bolts and start and run motor....if noise change then maybe flexplate

When you say whine does it only occur under acceleration only? If so most likely the wheel hub assembly or some will say wheel bearing but on these vehicles it is complete hub assembly. If you turn or swerve one way then the other does it go away in one direction? If so another strong indication of hub wearing out. If not, and it is a really high whine with acceleration it is also possibly the transmission. I have heard of this complaint before, it's not a sign of failure just a noise that develops due to the pressure placed on bearing under a load. First change fluid and filter for tranny after a good flushing. Replace with high quality fluid and a bottle of transmission seal restore product. Go 1000 miles, change fluid again, if noise is still there turn up radio.
Sorry but just a whine under acceleration isn't a lot to go on. But I'm willing to bet wheel hub. 9 out of ten front end whine complaints is wheel hub or bearing especially on a heavy 4x4 suv

not sure if you know this but you can go to

mitchell1diy and for ten bucks you can get everything about your car.

If you're standing looking at the rear of the vehicle, it's on the chassis rail on the right hand side rear wheel arch.

1997 Land Rover Discovery
4.0 liter V-8 VIN

oil from the pcv valve going into your intake manifold will cause a gasket to swell. but it should not be to the point where it's noticeable. you should probably replace the intake manifold gasket at this point.

There is a safety switch that can be reset under the hood on the passenger side under the fuse box panel.

Sounds Like Pinion Bearings , But Carrier Bearings Should Be Replaced (In My Opinion) as they Could Be Contaminated