Thread: D3 TDV6 Response issue

Originally Posted by CaverD3

D3s do tend to have a lag but mine was greatly improved by the enhancement program. There have been instances where this did not take, a re-flash will not fix and it has to be stripped and re-loaded, dealer will not want to do this without OK from LR as it is a long process.
I had some corrupted files which caused problems too as wll as cold starting issues. Files replaced and fixed.
Recently a fuel preeure issue TSb was carried out which made an improvement in performance.
The lag is more asscociated with the auto box rather than engine there will be times when it will find itself in the wrong gear and will not kick down as you learn how the box works and the box learns your driving style things will improve. The re-flash may have set the box again and you are back to square one.
A few folks on th disco3 site had the same issue, suggest you stick a post on there and see what solutions they found from the dealers.

Here are some to get you started:

DISCO3.CO.UK - View topic - Acceleration hesitation at rolling stops

DISCO3.CO.UK - View topic - Throttle delay

DISCO3.CO.UK - View topic - Automatic transmission hesistates when changing up into 2nd!

ok thanks for that, it does appear to be a txmn problem and before it does kick down it clunks! Bloody thing


Just been into those threads and posted. Seems they have the exact same thing up in the UK and other countries that I am suffering from with my D3.

cheers
PEter

RC Models and Supplies, Radio Control Model Hobby Supplies - Anthony's Pete-n-Planes

I haven't heard of 2007 models having trouble with the turbo, but some of the 2005 and early 2006 D3's were found to have sticking turbo vanes, which can be the cause of such symptoms. As far as I know, this doesn't set off any fault codes, so wouldn't be detected by the normal diagnostics routines.

The 2007 loaners I've had have always had less lag (and more oomph!) than my 2006. With mine, driving in Sports mode reduces the tx lag.

Cheers,

Gordon

I'm not convinced it is a s/w issue. all the 2007 / 20008 loan D3 we have had have not had the response hesitation issue.

But LR refuse to look at Hardware and only look at the s/w, if it does not give a fault code then as far as tey are concered it does not exist which is nonsense.

I drive a '08 TDV6 RRS and it doesn't have unusual lag.

BUT.....

My wife owns a petrol VW Golf and every now and then it behaves exactly as your Disco. The veedub dealer was polite enough but not really interested as I can't replicate it on command. Just gave the usual platitudes. I,m still trying to get it sorted.

I think in my case the transmission does not kick down to first or second and tries to start off in a high gear. It can be very scary if you are trying to accelerate into traffic.

I had a VW Golf diesel did similar, but would also judder on hills as it would not drop a gear (DSG box) also clouds of black smoke. Dealer tied all sorts of things to fix incuding new turbo and new box. Eventually got solicitors advice to frame a letter to VW. Dealer eventually got VW to replace the vehicle.
Two months later I saw the VW head office tech driving it. He told me it turned out to be the ECU, which they replaced. ECU was saying "All well" when it was sick itself!
Try to keep the dealer on side. It is easier if he fights the battle for you.
Take notes of all symptoms and work that has been done with dates. THen if you need to put it in writing, first to dealer then to LR they are more likely to take note.

How long have you let the Auto box learn before dealer has re-set it again?

Yep, I've had a few instances when I've floored my TDV6 Disco from a rolling start to pull out of a junction quickly or to nip into a gap in the traffic, and there has been hesitation. I've adapted to it exactly like Forest - partial throttle rather than stamping the pedal to the floor. Now I can't even remember the last time it happened to me.

In general, the car seems to respond better to partial throttle than heavy foot treatment. Ride that torque wave!

i think thats something all turbo diesels benefit from. the injectors are alot quicker to respond to the throttle than the turbo has been my guess. lots of fuel and not much air can make a slow getaway.

still has the issue after 48,000km

is much better after the trans and engine has been reflashed then it slowly comes back as the adapative things learns bad habits again.