TD5 software

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
RobCSH

RobCSH

New Member
Posts
144
Location
The pub
Don't know if anyone has seen this, found it this morning.

Home

Seems like it's a reasonable(ish) priced diagnostic tool. One lad at works been harping on to me about programming injectors, we do the same on the trucks at work, they have a trim code to set them up for correct fuel delivery to improve MPG and performance. Thing is, ours will self adapt, ie run the motor for 30 minutes and it will set itself. Do the ones in a TD5?

Seen a photo of them on the net, they look like the Delphi injectors fitted to our D9, D12 & D13 engines, ours operate between 90 & 110 volts (step up capacitor in the EECU), what voltage are the TD5's

Just being nosey.....

Rob
 
The step up capacitor on Td5 works on about 90 volts and is integral with the ecu.

Td5 wont "learn" the injectors, if you change just one or two then it will run, but change all 5 without programming then it either wont start at all or run lumpy and wont rev.
 
Probably the same injectors then, Delphi part number would be useful.

Funny thing is, Volvo started using this type of system in 1993/4, and one of the benefits of this was that cruise control was a cheap by product, ie, just fit a switch and a bit of software, no moving parts so it was easy. All our truck instantly gained cruise as standard. Land Rover the cheap skate b**stards make it an option and only on the top 2 models.

Wonder how easy it would be to retrofit cruise to a lower model, would it need a software update?

Rob
 
RobCSH said:
Wonder how easy it would be to retrofit cruise to a lower model, would it need a software update?

Rob
Click to expand...

cut hole in the steering wheel , fit ya switch and away ya go :)

wiring will plug into coupler , ecu is allready cruise compatible
 
Hi,clutchdust,any idea how to code in the injectors when it say wrong letter(out of range or something)its the last letter and it says it has to be a A,B or a C-but all my injectors have letters out of that range.My local garage have fitted all 5 new injectors on my request but it still misfires possibly cos they're
not being coded.It would appear that the garage dont really know what else to do.Thanks for any help.I've had the injector loom changed,the engine loom changed and all the injectors changed.I'm now rather fed up to say the least(and almost broke)thanks again
P.s the oil was so far up the loom it still keeps showing in various places including the fusebox.Could it be the ecu is knackered(it was full of oil?)
 
On the early TD5's there was a design fault on the injector wiring harness from the ecu into the rockers, oil will make its way back down the wiring harness to the ECU where it can cause bad starting and lumpy performance.

If you pull out the plug at the ecu end you may find old engine oil that has made it's way down there, clean it up with rags/wd40/airline and refit, check it periodically or spend the £200 odd quid on the newer harness
 
Re the Delphi injectors, the nature of their design means that the compression of the injector needle spring cannot be adjusted. In normal injectors the spring can be adjusted to the correct pressure, and so if each one is set right, they will all behave the same. As the Delphi injectors have a pushrod fitted in the top, it is impossible to incorporate any means to adjust the spring. So, they make the injectors as similar as possible, then jig them on a machine and test them. The test result gives each injector a performance rating, indicated by a letter, and the ECU knows from that how to adjust the metering of each injector to make them operate the same.

HA HA HA !

You may well ask, "WHY?"

I think the answer is because someone had nothing better to do than dream up this ghastly system.
It is a horrible system, has NO merits, and is MUCH more liable to trouble than every previous diesel injection system used in LandRovers.
This is called progress.
Progress is defined as forcing owners to hand their broken-down cars and lots of money to LandRover dealers.

CharlesY
 
The merits are it adjusts it self for load, wear, cylinder balance, gives more power, better fuel economy and better starting. This system works excellently on our trucks, gives little problems and is easy to work on. (can't comment on LR yet...)

The main reason people outside of the trade don't like it is without the correct kit, you will struggle to do anything with it. (and the majority don't understand it)

Don't understand why LR didn't make there's trim out like Volvo.

The main reason everyone has gone down this route is emmisions.
 
Yes sure, but I am pretty sure the Delphi injectors in the TD5 do not feed-back any useful information to the ECU.

My engine went through horrors for a while because an injector lower sealing copper washer (worth a penny a dozen) was leaking cylinder gas into the fuel gallery, causing poor running, and terrible starting problems.

I worked out what the trouble probably was, took the top off the engine, and removed all the injectors - TWICE as it happens.

Each injector was replaced where it came from, which probably matters. The problem was solved by very careful attention to the sealing washers.

The point is this - at no stage did any fault light appear on the dash, even when the bloody engine wouldn't even start!

TD5 runs nicely cruising (when it runs at all), but with a big trailer you get the feeling it doesn't have the guts to pull the skin off a rice pudding. It must be bad - the owner manual tells you to start off in LOW RANGE when towing, and change to high range on the run! They silly idiots actually give a lesson in the book about double-de-clutching!

I bet there's a few mangled transfer boxes out there.

CharlesY
 
Got to agree with you, the way the green donkey's are forcing us aint good. Every advancement we see at work (euro5) we see the mpg figures plummet. The new way to go now is called 'Adblue'. This is an additive stored in a separate tank, that is injected into the catalyst of the exhaust that neutralises harmful gasses. Problem is, when you trucks only doing 11mpg anyway, the last thing you want is to start bo!!ocking this Adblue in at 22p a litre (which by the way is now being made a legal requirement and running the vehicle without is an offence. Electronics on the vehicle will monitor it, and store any 'fault codes' aka infringements for upto 4 years!!!!)

I'm just hoping this doesn't work it's way down to the private vehicle, but I suspect it will (everything else does) in the next few years.

Btw, the reason you Disco didn't flag a fault code, is there's no way of puttting a sensor to every fault. The only way of diagnosing some problems is the old fashioned way! (10/10 for the diagnosis though). We get this at work where the 'kids' only know how to read fault codes and throw parts at it. Apparently very common nowadays...

Rob
 
You must log in or register to reply here.
Back
Top