6 speed zf auto from RRS into D3?

[Discofever]

Hi all,

I have the option of purchasing a 2005 Range Rover sport zf 6 speed auto with low ks which I would like to put into a 2006 D3 TDV6. I've been searching the web trying to establish whether they carry the same boxes and I'm 99% sure they do. Could more learned minds please confirm?

Many thanks John.

[BMKal]

Yep - as far as I'm aware it's the same box. D3 / D4 (2.7 diesel like mine), RRS and Ford Territory amongst others. ;)

[justinc]

The mechatronics unit inside the trans will need programming to suit your vehicle. If you can get the transmission serial number/ calibration code from the donor vehicle it would help.

Jc

[rar110]

The tdv8 6hp26 had a different spec number to the tdv6.

I replaced my L322 tranny with the same spec box from a later year model. I had to swap the mecatronic from the old tranny into the new one.

[Discofever]

So i'm able to swap the mecatronic unit from my old tranny into the new one then?

[Graeme]

I replaced my L322 tranny with the same spec box from a later year model. I had to swap the mecatronic from the old tranny into the new one.IIRC you fitted a MY10+ box to a pre MY10 so had different canbus protocols.

Sometimes different torque converters are fitted for specific engines as well as different clutch specs but if both engines were TDV6 then not likely to be a problem, other than as JC mentioned the possibility of needing the D3 s/w re-installed.

Swapping mechatronics would mean fitting a well-worn valve set into a barely used box so best to keep the RRS's mechatronics installed if possible.

[Tombie]

Check if it's a 6HP26 or 6HP28....
The 28 won't work on the 2.7...

[Graeme]

HP28 only for the 5.0 V8 and 3.0 TDV6.

[rar110]

IIRC you fitted a MY10+ box to a pre MY10 so had different canbus protocols.



Sometimes different torque converters are fitted for specific engines as well as different clutch specs but if both engines were TDV6 then not likely to be a problem, other than as JC mentioned the possibility of needing the D3 s/w re-installed.



Swapping mechatronics would mean fitting a well-worn valve set into a barely used box so best to keep the RRS's mechatronics installed if possible.



Correct Graeme, but the ZF spec number was identical. I will be getting the valve body swapped over later when it has its first tranny service at 50,000km. However, will keep the original TCU.

[Discofever]

mmmmm

Andrew from Les Richmond's preliminary diagnosis was torque converter. Second opinion on this from a tranny specialist is definitely gearbox related.

I'm wondering whether i go down the path of an entire gearbox refit with low kms or an overhauled torque converter. Gearbox is 2k and the TC is $700.

Not sure how to move on this at the moment.

[Graeme]

What's the service history of your gbox and how many kms now?

[Discofever]

What's the service history of your gbox and how many kms now?

G'day Graeme, no idea on the box. 260k and it has the metal pan so assuming it has at least been done once...

[rar110]

$4500 for ZF in Sydney to do a full refurb. If I hadn't found a low km box with TC like I did, I would have gone the rebuild option.

[Discofever]

Is that 4.5k all inclusive?

Just drained out 5 l of tranny oil, had been done relatively recently. No shavings and oil pretty clear, looks like it's the TC.

[rar110]

Plus removal and refit $1000-1500. The $4500 incl tranny oil.

[rar110]

What's it doing? My trannys internals were ok but the output shaft and TC input gear wore away as no lubrication applied. Here's a pic.
https://www.aulro.com/afvb/images/imported/2016/11/802.jpg

[Graeme]

The ZF rebuild cost includes a new (not remanufactured) torque converter - well mine did 2 years ago.

[Graeme]

Assuming fault codes have been stored, what do they suggest?

[Graeme]

260k and it has the metal pan so assuming it has at least been done once...That could have been more than 160k ago!

[Discofever]

That could have been more than 160k ago!

Yeah know...

So there is a metallic scraping sound never present on load. It always goes away when the accelerator pedal goes down. It happens intermittently at idle or when I release the accelerator to slow down. It is present intermittently in reverse and drive, not in park or neutral, sports mode the same. If I turn the car off and back on, it's gone, but inevitably returns. Sometimes it will run fine around town for 15-20 mins and then it rears its ugly head again only to go away for another 10 mins repeat.

I have no issue with gears slipping, shudder etc. Car drives well and is smooth.

I have sprayed all the belts, changed the alternator (which needed to be changed anyway), checked the vacuum hoses and changed out the diff oils.

I am presently in the middle of doing two tranny flushes. Oil looks ok - no frags.

[Discofever]

What's it doing? My trannys internals were ok but the output shaft and TC input gear wore away as no lubrication applied. Here's a pic.
https://www.aulro.com/afvb/images/imported/2016/11/802.jpg

What was impeding lubrication to the shaft and TC gear? It does sound like a lack of lubrication issue - but I have little intel on trannys.

[Graeme]

Only greased prior to fitting the transfer case...

[Graeme]

So there is a metallic scraping sound never present on load. It always goes away when the accelerator pedal goes down. It happens intermittently at idle or when I release the accelerator to slow down. It is present intermittently in reverse and drive, not in park or neutral, sports mode the same. If I turn the car off and back on, it's gone, but inevitably returns. Sometimes it will run fine around town for 15-20 mins and then it rears its ugly head again only to go away for another 10 mins repeat.

I have no issue with gears slipping, shudder etc. Car drives well and is smooth.
It sounds as though the noise has nothing to do with the oil change but could be the torque converter or the flex plate disintegrating.

[Discofever]

If its a TC diagnosis is it worth just replacing TC? Depends on how much damage is in there I assume.

[Discofever]

Well the tranny needs to be rebuilt. The TC was likened to a squashed tomato which is an interesting analogy. It's being done in Melbourne at an indy trannie specialist and will come in at 4.5k :(

That said I purchased the car for 11k with 250k on the clock so I effectively have a TDV6 D3 with a rebuilt auto for about 16k.