Hi,

 

Not strictly speaking a Z related query but rather in relation to my Jeep Grand Cherokee.

 

On driving straight or turning right there is a "grinding" noise coming from the rear. This noise stops when turning left and then reappears when you straighten out. This noise is not audible at slow (ie under 5mph) speeds but rather whilst you're driving around town or on the motorway.

 

I've just had the front and rear diffs flushed and re-oiled which seems to have made them slightly louder but did cure the annoying "skipping" when on full lock. However, the grinding noise has not changed in noise level or pitch since the above service.

 

Was wondering if this could be diff related or should I perhaps look more in the direction of a broken wheel bearing?

 

Any and all thoughts related to the above on a postcard to ...

 

;)

 

Many thanks!

 

Dan

Dan,these are well known for diffs going!-oil change won't alter the fact it's fooked!

Check the rear bearings and also the rear brakes!(sounds silly I know,but these being worn down give similar noises!)-if these are sound I would 99% say the diff.

HTH,;)

Dan,these are well known for diffs going!-oil change won't alter the fact it's fooked!

Check the rear bearings and also the rear brakes!(sounds silly I know,but these being worn down give similar noises!)-if these are sound I would 99% say the diff.

HTH,;)

 

Hi,

 

Yes, the mechanic who did the flush and oil change said the diff was "tired" (in his words) but would still be ok for some time. And I'm aware that they are prone for failure (especially the rear diff.) I'm fairly certain the rear brakes are fine as the discs, pads and handbrake shoes were changed only a month before I got the car. Guess I'll have the rear bearings checked and go from there.

 

Thanks for your feedback!

 

Dan