[Grinding noise on overrun...]

On 7/16/2010 at 8:54 AM, Varsas said:

Hi. Me. Again...

So, I have bought another S3 land rover. Even before the other one broke I wanted a better example so I thought I'd spend a bit more and get a nice one. That hasn't gone too well.

When you lift the throttle at high speed (45+mph) you get a horrible grinding noise. This happens even if:

Clutch in/out

Overdrive in/out

3rd/4th gear (although the noise is reduced in 3rd)

Holding gear sticks/levers in place

You can't go fast enough in 1st/2nd or low ratio to make the noise happen, and obviously I can't go that fast in 4WD to test that either.

I understand the usual suspect is the rear diff. (and I do hope that's all it is) but it really sounds like it's coming from much further forward, gearbox/transfer box area.

I suspect the overdrive. Does that sound sensible, or because it happens when out of overdrive does that mean it can't be the overdrive?

If I do want to remove the overdrive do I need any new parts? This: http://www.nickslandrover.co.uk/archives/619 suggests I need a new, non-overdrive, tab washer?

Cheers again.

Hi did you ever find out what was wrong? I too have an S3 that has started to make a horrible grinding noise as you have described. Mines a 88" Diesel with overdrive.

 

Thanks Paul