Reply With QuoteYou're getting worse economy than my 4.6 V8.
YarnMaster
Many of the ecu's retain power with the ignition off. Disconnecting the battery may have caused a power off reset that would not otherwise happen.
Any idea what is causing the alarm problem? The alarm is controlled by the BCU so I'd be wondering whether there was a wiring/ground issue that might be having more widespread effects than just the alarm.
TopicToaster
You're getting worse economy than my 4.6 V8.
YarnMaster
SupporterO, I agree. It's one of the reasons I keep modifying the damn thing in hopes that I finally find what ever it causing it!Originally Posted by Redback
The tune on it is a TD5Inside done by Kelvin (disco_thrasher) on an NNN ECU. I'm wondering if there's an issue with the tune?
YarnMaster
Do you have access to a nanocom?
It would be interesting to see a recording of the td5 ECU inputs with the vehicle at operating temperature.
YarnMaster
SupporterYeah, I have a Nanocom Evo sitting in the garage. Will try to work out how to use it and how to record the ECU inputs.
Wizard
SupporterThe TD5 ECU does not self-learn. It will "self-limit" on certain conditions (over boost, Low boost, high temps, low fuel press ect ect) and limp home on some others like torque limit signal from trans for example. But these scenarios should return better fuel usage because they limit fuel input to the point that the car feels dopey
Are your injector codes right? What's the injector loom like?
It could be a crappy map, if the timing is not good. BAS had three goes for me, first two were poor, I used nanocom to record heap of data and sent it to him – a cracker 3rd map was sent back. But if you had fuel consumption problem before you mapped…. Does the new nanocom have the map generator like we got with nano 1? Can you remap to factory to test? I know there are some funny results with certain part number ECUs in certain model cars, and don’t rule out the ECU.
How much fuel are you putting in (how big is you tank 90ish)? Our TD5 with a stage 2 BAS map has never been as low as 650, even when pushed, and it has enough go to trigger the torque limit in the Auto trans if we really push it. If you aren't hitting that trans limit with all your mods than something is seriously wrong, and I wouldn’t fit any new toys until it's sorted. Actually it should be completely unnecessary to fit Boost Box, VNT ect because it’s easy to hit the limit with a nice fuel map (why I didn't fit boost box). Intercooler yes to lower temps. Have you done something about the trans limit (not heard of that being tampered with)? Must admit it’s some 6 years since I improved mine.
L322 3.6TDv8 Lux
YarnMaster
You need an SDCard inserted to do it, but basically in the TD5 Ecu module, then Input Fuelling. You see a disc icon at the bottom right of the screen. That will prompt to for a file name, and begin recording inputs when you hit save.
The other thing that would be worth recording is the Autobox > Inputs > General.
I doubt it is your problem but you can reset the adaptive behaviour of the Autobox under Utility > Reset Adaptive Values.
I'd also take a look at the SLABS module > Input > Input Switch. Make sure that the switch values reflect reality, especially the "low range switch".
cheers
Paul
YarnMaster
SupporterNo idea, how do I check?
Think it's fine. Was replaced by the previous owner two years ago.
No idea, but would of expected it to have all the functionality of previous models.
I don't have a factory map setting to load on, not sure if the nanocom contains these?
My vehicle came with the it's current map already applied when I purchased it. I know the previous owner had difficulties with some flat spots and this was the second or third different tuners map. I think previously it had a BAS and then was changed for the current TD5Inside map, which apparently solved the flat spot problems.
Yes, standard 90 litre tank in her.
I have yet to find any evidence that the torque limit for the automatic transmission exists. I can't find any discussion on it in the Rave manual or any sensor on the vehicle for it.
Originally, thought this was an issue with the vehicle, but an uprated MAF sensor from Alive Tuning (previously TD5 Alive) solved the issue.
Have look on many forums and read many threads and there is no technical discussion on a torque limit. None of the major Land Rover tuners know anything about it.
The evidence points towards it either being over boost or rather over air flow through the MAF sensor that causes the issue that is mistakenly refered to a the torque limit. The MAF sensor has a direct impact on the automatic transmission and that may be why it is more susceptible to automatic vehicles.
YarnMaster
Checking injector code is cam cover off and read the codes, then check they are entered correctly in Nanocom.
Judging by the threads the previous owner started he was on the ball and did things right.
The list of replaced parts was very extensive and included a brand new nnn ecu, injector loom, engine harness, new MAP, MAF, AAP sensors, the list goes on and on. They are worth reading for a bit of background on tw7cx's problem.
To get the map generator you need to download the PC application for the Nanocom One. It comes as part of the install.
cheers
Paul
Wizard
Supportertwr7cx, I’m no expert; this is just what I learnt/was advised when I did mine.
Injector codes are important, it is a calibration code to allow the ECU to fine tune each injector. As Paul mentioned, the rocker cover needs to come off, the codes are stamped on each of the individual EUI bodies. Make sure the ecu has the correct codes in the correct order. While you are there check the engine harness to injector harness connector for oil.
If you have no data with a stock fuel map, I would definitely try it for a week or so. (I assume New nano can do this like nano1) Nanocom can save your current map. The map generator can be used to create a new factory spec map, there’s a good list based on ecu numbers, vehicle & trans. Load the stock map with nanocom and see what fuel consumption is like (and how slow the car feels). Make sure you have a batt charger connected when loading the map to ensure a nice high constant voltage during the write process.
I will believe you on the torque limit, that is interesting – once again it what I was advised (“the auto won’t like >440ish nm”). It was BAS that advised me not to bother with his boost box for this reason?? And there were several threads on here at the time around intercoolers, fueling ect that mentioned a similar limit for auto vehicles while manuals could be taken in to the mid 500s – maybe just a myth, or system deducing something based on other parameters? What I do know is what my truck does; On the highway towing something heavy, at 90km if I quickly plant the foot right down, it pulls like a train for about 3-5 sec, then I get a chime, M&S lights and greatly reduced engine power, however it still uses top gear and the lockup, which to me doesn’t match limp home mode. Turn off, restart and its happy. Now do the same maneuver but slowly push the throttle all the way over 1.5-2 seconds and it just goes really well, just don’t get the initial wahooo. Empty doesn’t have a problem, it just goes. With the stage 1 map, it never complains, something doesn’t like the fact it has 100-120nm more than it deserves to (1999 TD5 was only 315nm originally) and I have always assumed it was the (mythical) torque limit – obviously incorrect.
I’ve not followed the D2 section for some time now (moved on to other project and) my D2 has not had any issues; the old girl just keeps working. Apologies if I’m wrong.
L322 3.6TDv8 Lux
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