Whining D3

[bucket-918]

Hi All,
My first post on AULRO, so go easy!.....

Have a 2005 D3 TD6 that just recently developed a low level whine between 95 & 105kph whenever the accelerator is depressed (even slightly). Coasting or decelerating no noise.

Worse still is that yesterday while driving along the freeway I went a bit faster (out of curiosity re the whining) & when I got over 130kph a much louder whine started & increased at around 140 where I then felt that it was prudent to slow down & stop the whine.

I'm gathering it's a transmission problem. Doesn't seem to be more louder at the front or back of the car. Any thoughts people?......

Thanks
Rob

[DiscoWeb]

bucket-918,

Welcome, consider it easy,

1. Whining D3 could be transmission. As your is a 2005 I would assume it has over 120,00 km on the clock. The D3 transmission is noted as sealed or filled for life, however in reality it is best to flush fluid around 90,000 km.

2. Could also possibly be differentials and front diffs have been known to go, again particularly if they have not been serviced properly.

The other suggestions i have is to re-post you query in the D3/D4/RRS section of the forum as it is filled with experts (unlike me) who can give you some really decent advice and directions.

Good luck with the issue, sounds like something I would get looked into quickly.

George

[bucket-918]

Thanks for the super quick reply.

Klms are at 105K & the auto transmission was only serviced 10K ago (oil flushed & replaced at 95K) due to shudder around 1900RPM.

I'm suspecting it's in the diff area....was hoping it was something simple (can hope).

Will take your advice & repost elsewhere on the site.

Rob

[bucket-918]

Hi All,
Have a 2005 D3 Auto TD6 at 105K's that just recently developed a low level whine between 95 & 105kph whenever the accelerator is depressed (even slightly). Coasting or decelerating no noise.

Worse still is that yesterday while driving along the freeway I went a bit faster (out of curiosity re the whining) & when I got over 130kph a much louder whine started & increased at around 140 where I then felt that it was prudent to slow down & stop the whine.

Only recently had the supposed "sealed for life" auto transmission flushed due to a shudder at low revs, but I'm pretty sure it has nothing to do with transmission, more a diff problem? Doesn't seem to be more louder at the front or back of the car.

Any thoughts people?......

Thanks
Rob

[Barefoot Dave]

Welcome Rob.
You might also like to check tyre wear. Even a slight variation of tyre diameter due to uneven wear (or different tyre type) can cause tightening of the diffs due to different axle speeds in the constant 4WD.
Hope this helps.
Dave.

[jonesy63]

105k km is not that many for the gearbox to whine... my bet is on one of the diffs.

Good luck!

[Scouse]

Threads merged.

[WazzaACT]

I had a similar problem at around the same K's and I hate to say it but in my case it was diff and transmission. Tried everything with tyres etc but it was as bad as I thought it might be. Sorry.

[bucket-918]

It's interesting some of you mention tyres, as I just had some brand new tyres fitted 4,000k's ago. They are Cooper 265/60 R18's. Previous were Wrangler 255/60's. The Coopers are all in as new condition (as you would expect) with pressures all fine, but you've got me wondering.....

Also when the tyres were fitted, the tyre place wanted to do a wheel alignment which necessitated going back to LR dealer to have some part of the suspension/traction control turned off & then turned back on afterwards. (Had never heard of this requirement before & it was a nuisance plus having to pay LR to do it.)

Anyway, this was all done apparently OK so I would sorta be surprised it has something to do with the whining, however your concerns on the tyres & the coincidence that they were only fitted relatively recently is certainly suspicious!

Hope you're wrong WazzaACT.....

Thanks
Rob

[CaverD3]

What ATF did they use in the transmission?

[Barefoot Dave]

Rob, it's only an issue if one or two tyres have different radii to the others.
= different rotational speeds of the axles at the diff.
Happens most often when a unused spare replaces a 10-20% worn drive tyre.
Cheers, Dave.

[Graeme]

Also when the tyres were fitted, the tyre place wanted to do a wheel alignment which necessitated going back to LR dealer to have some part of the suspension/traction control turned off & then turned back on afterwards.
Set the suspension ecu to tight tolerance mode to maintain heights closer to the target height than is necessary for normal use. This mode operates the compressor more frequently so only used when there's a benefit. IMO LR should have made it selectable from a service menu rather than requiring the use of a diagnostic m/c.

[bucket-918]

A quick update on the diff whine.....

Took the car to a transmission specialist who found that the front diff only had 1/2 a litre of oil instead of expected amount (about 2 1/2 lts) & that the back diff, although being the correct level, was absolutely black.

They believed that the diff plugs had never been removed since new & consequently, had never been checked. Small amounts of metal particles were also found in the front diff on the magnetic part indicating permanent damage to the crown wheel & pinion thus explaining the whine. Additionally, he has concerns that the bearings may have been permanently damaged by the lack of oil & may feel in the future.

With the slow loss of oil, when the oil no longer met with the mechanicals, the whine suddenly started rather than over with natural wear & tear over 100's of thousands of klms.

The car has had all the required services through the LR dealer & has had the booked stamped accordingly. It is at 102,000 k's so the diffs should have have been checked at least a few times.

To say I am ****ed off is an understatement. I am gathering my info together & will be taking this to the local LR dealer.

I took the car to the transmission specialist as I didn't trust the LR dealer to do the work properly (based on passed experience) & this finding seems to firmly support my concerns!

[CaverD3]

There is aknown issue with the diffs, particularly the front. Diff oil contaminated by the coating used on the case causing seals to fail and oil to weep. They should have noticed damp patches and checked the levels at least.

[jonesy63]

Rob,
So do I win a cupie doll for correct diagnosis? :angel:

I'm pretty sure they don't replace the oil in the diffs and transfer case until the 120k km service.
Cheers,
Rob

[bucket-918]

Sorry....no cupie doll Jonesy, but am happy to pass on some of my bile & vitriol!

My beautiful perfect car is no longer so perfect - it whines.....(am strongly resisting a wife joke here!).

And thanks for the info CaverD3.....very interesting.

Oh well, I guess I can just turn the music up louder.

Rob