DISCO4.COM - View topic - Torque convertor / gearbox problems need rebuild advice req

Renton

Member Since: 13 Jan 2009
Location: Somewhere in the middle
Posts: 1718

2005 Discovery 3 TDV6 HSE Auto Java Black

michele wrote:
Hi guys, very interesting to read all this and all the effort you put in to share what you know and have experienced.
You make me a worry a bit ... For the next maintenance where they will change the gearbox oil, I would like to know what the double flush really means and if you really need it (what is the advantgae versus a normal change of oil)? And should the filter be changed as well? I have a 2005 V8 petrol Disco III With 120000Km, and live in The NL.
Especially for Dan and Renton, do you have information for me please where to go to test the gearbox oil to see if it is contaminated with glycol?
Thank you so much, Michele!

Sorry Michele, just read your post.
Simply changing the oil won't get all the old oil out. You need to flush it twice in order to do that. Always change the pan filter as well when you change the oil.
Any transmission specialist should be able to check your oil.

Do you have problems with your box? CLUB ILLEGAL CAR WASHERS

21st Nov 2011 10:04 pm

Andrew van den Heever

Member Since: 09 Jun 2007
Location: Cape Town
Posts: 340

2011 Discovery 4 5.0 V8 HSE Auto Fuji White

Hi guys.

I have a 2007 V8 4,4l. I have had it since new and I am now on 100 thousand Km.

I plan to keep this vehilce for anothe 100 thousand! I have never had any gearbox issues. Do I need to flush the gearbox oil purely as a maintenance issue or only if I experience the dreaded judders?

5th May 2012 10:11 am

caverD3

Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922

2012 Discovery 4 3.0 SDV6 SE Auto Fuji White

I would change the ATF (use correct rated, ZF is best) and put a new steel pan with filter. then do another change in about 50K.

â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.

6th May 2012 8:56 am

Andrew van den Heever

Member Since: 09 Jun 2007
Location: Cape Town
Posts: 340

Hi CaverD3.

How's this for interesting:
I called our local ZF people. he told me that the ATF should be changed at 60 thousand KM, but because ZF gaurantee the box for 100 thousand km LandRover don't bother telling you this?????!

Also, at 100 thousand KM the ATF is degraded. Changing it now would increase the rate of wear in the box!!!

WHAT?! He said I should not change the ATF.

Anybody heard this before?

6th Jun 2012 10:47 am

caverD3

Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922

Does not surprise me but changing at 60K you still leave a lot of ATF in the TC. So maybe a flush at 100K? The degredation also will depend upon use towing hot conditions etc. 100K would be ok I think for normal use but as many have said; change often if you tow.

â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.

6th Jun 2012 11:40 am

KOOS BEST

Member Since: 14 Feb 2010
Location: Mtunzini
Posts: 122

2006 Discovery 3 TDV6 S Auto Alaska White

Hi I have ordered the following additives for my car since I have read on the Ford F150 forum where they experience the same problem with the same box.

The shudder disappears totally when the Lubegard products are added, according to the forumites , yes permanently!!!!!!

They add
1 x 2fl oz of DR TRANNY INSTANT SHUDDER FIX
http://www.lubegard.com/~/C-230/Dr.+Tranny+Instant+Shudder+Fixx
2 X 10fl oz of LUBEGARD ATF PROTECTANT OR LUBEGARD HIGLY FRICTION MODIFIED ATF
http://www.lubegard.com/~/C-112/LUBEGARD+A...Protectant

and voila in the ZF6HP26 gearbox.Runs smoother, cooler and eliminates the shudder.

Worth a try, I say.

Well I have only a slight shudder when I tow, according to agents I require a new TC , have done the double flush myself with FUCHS ATF 4400 and it's much better but still have this slight shudder occasionally.

Mine only arrives in a fortnight, will keep you posted.

6th Jun 2012 12:49 pm

Renton

Member Since: 13 Jan 2009
Location: Somewhere in the middle
Posts: 1718

Interesting Koos, keep us posted! CLUB ILLEGAL CAR WASHERS

6th Jun 2012 1:13 pm

tlt

Member Since: 01 Sep 2006
Location: Austin, TX
Posts: 262

Great information on the friction modifier. That would confirm then, the torque converter is the problem. Early ones had problems with the coatings on the clutches, replacing it with a refurbished one should fix the problem.

8th Jun 2012 2:22 pm

jelle

Member Since: 19 Jul 2009
Location: Nord
Posts: 15

2008 Discovery 3 TDV6 HSE Auto Stornoway Grey

I posted the same message in another discussion on the same subject, but this one seems a bit more livelier.

I do/did? have the same issue : bad vibes between 1500 an 2000 rpm/. and most pronounced when more torque is needed (going up-hill e.g.) most of the posts on the subject point to the auto gearbox and clutch lock-up, torque converter issues. So of I go to the dealer and for 2nd opinion to a local ZF specialist. Neither of them is convinced it is the gear box or TC. The car changes gears smoothly, there does not seem to be excessive slipping of the TC etc.

Already changed the ATF 20.000 k ago but made no difference, if anything it made vibrations more pronounced. I've waited 210.000 k before the first ATF change, so an additional one seems appropriate and I booked her in shortly. I hope that that will be the end of it. Don't fancy to dole out short of 4000â‚¬ for swapping a gearbox.

This weekend I did some long due cleaning : the intercooler and the MAP sensor. Both were as filthy as ...
The intercooler was completely clogged up, so probably an efficiency of 2% (and I think it has been for at least 50.000 k as that is how long ago the D3 has taken its last mud bath) It seems that hosing it down does not seem to do the trick.

Anyways took a lot of the mud out so that at least there is some "intercooling". (still not more than 50% but I did not have enough time to get rid of all the crud.
The MAP was completely caked in black soot, even though the hole was still open I have been able to extract quite some black soot out of it. (Gas, WD40 and careful prodding with rolled up thin slivers of tissue paper)

I took the car out today and to my astonishment the bad vibes seem to have gone. Still early days and it may still come back but I'll keep my fingers crossed.

If it is confirmed by the next 1000 k (next week ore something) I'll work on a theory to explain this. Someone got any ideas?

9th Jul 2012 9:12 pm

KOOS BEST

Member Since: 14 Feb 2010
Location: Mtunzini
Posts: 122

I have tried the lubegard additive, they have send me 2 x bottles of ATF FRICTION MODIFIER and not what I wanted. It did absolutely zero for the shudder.

Can anybody tell me if any of the later D3 models have the 6HP28 gearbox in?
I found this in a RR FORUM.

"In 2007 ZF introduced an â€˜improvedâ€™ version of the 6HP26, called the 6HP28 â€“ now used in the latest L322s â€“ which, amongst other improvements, had a mechanical spring/damper assembly built into the lock-up clutch. It was advertised in the technical press at the time as â€œZFâ€™s new vibration-reducing torque converterâ€."

11th Jul 2012 1:56 pm

GdayMate

Member Since: 03 Apr 2012
Location: Two Wells, SA
Posts: 3

2005 Discovery 3 TDV6 SE Auto Fuji White

caverD3 wrote:
Doesn't matter what colour the coolant they will test for it, I think it costs about $50?

Hi carverD3, I'm in South Oz and wondered if you know where (I know it's been a while) I can have my ATF analysed?

Thanks.

23rd Jul 2012 7:17 am

KOOS BEST

Member Since: 14 Feb 2010
Location: Mtunzini
Posts: 122

Guys, I have amazing news.

The 2 x tubes of DR TRANNY INSTANT SHUDDER eventually arrived from an agent in S.A. .

It layed on my desk for a month.

I have added it and guess what...........................................................................................

My shudder is gone, completely gone , what amazing stuff.

Now I realise why the guys on the Ford F150 forum raves about it and a chap on the Jaguar forum.

This is a additive that works!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

9th Aug 2012 1:15 pm

maplecottage

Member Since: 01 Feb 2011
Location: Norfolk
Posts: 3171

2006 Discovery 3 TDV6 HSE Auto Java Black

Would a slipping TCC cause any fault codes to be logged

I had a BAS remap a few weeks back and it is designed to increase torque as opposed to outright BHP and speed. I now notice a 'rev blip' when changing up between 2nd and 3rd and am now convincing myself that the whole trans is not as smooth as it should be.

Have reset gearbox adaptations, no effect but have not reflashed the box yet (yes - it does have the 2nd gear - 1st gear thump)

Car is D3 HSE 2005 and has 82K on clock - 4Tech flush done 18 months (10K) ago to solve shudders.

Collective wisdom sought

7th Sep 2012 1:07 pm

Barn1e
D3 Decade

Member Since: 28 Aug 2006
Location: Mid-sussex
Posts: 2021

2005 Discovery 3 TDV6 S Auto Tonga Green

Did 4tech test the ATf for water (glycol test)? If not, I would start there. If rad is leaking water into ATF, a megaflush may help for a while, but will only delay the inevitable. I would not start with the assumption that the cause was the remap. 2005, TDV6 S, Auto, 190k miles, owned from new, V8 Brake Upgrade, Nancom Evo, RLD protector, BAS EGR blanking & Remap, separate ATF cooler, changing all the fluids ahead of time.

7th Sep 2012 1:38 pm

maplecottage

Member Since: 01 Feb 2011
Location: Norfolk
Posts: 3171

I was thinking that the remap (extra torque) has unwittingly exposed an underlying problem

7th Sep 2012 2:01 pm