Diff Or Wheel Bearing Issue

[Pattey21]

Hey guys,

Ive noticed recently as soon as i hit 60kph i start getting a humming/whining noise from the rear, it is there whether in gear or not so i know its not the gearbox, and doesnt change if under acceleration or deceleration.

When i get to about a 100 i cant really hear it anymore i think mostly because the road/tyre noise is louder.

Is there anyway of distinguishing whether its the wheel bearings or diff.

Cheers

Patrick

[blue_vl_t]

Turn hard to the left then the right with a bit of speed, if its a wheel bearing it will get louder as you load it up by throwing all the cars weight to that side.

Thats a good start, i have definatley rectified wheel bearing issues this way, mostly front ones though, its probably herder to load up the rear.

[89CAL]

Do you have aftermarket diff bushes? I get a bit of a whine with the polyurethene diff mounts (all 4) at 60km/h

Just something to think about

[Pattey21]

cheers ive thrown the car from side to side when i throw it right releasing weight off the right hand side the noise dissapears. so i assume its a rhs wheel bearing.ive got stock bushes cheers.

[blue_vl_t]

Sounds like it, another thing you can do is drop the diff oil, give it a change, so you can inspect the oil. If there is something wrong the oil will be dark and shiny.

Sounds like you have found it though.

[Pattey21]

yeah diff oil was changed 10,000k ago. is there anyway to tell if its a front or rear as i would like to buy the bearing kit. cheers patrick

[blue_vl_t]

yep, by braking form 110 kmh the front will get noisier while your slowing down