Mis-firing Td5

[Jimbo]

The Disco's poorly........it only seems to be running on 4 pots. If I re-start the engine then it runs fine - but not for very long (maybe 10 mins), after which it's back to 4 cylinders. My Nanocom reckons that injector 2 is having 'issues' - two error codes have been logged 'injector 2 open circuit' and 'injector 2 peak charge too long', does anyone know what these errors mean (other than £400 for a new injector  :shock:)

It's a '52 plate Td5, 108000 on the clock - and last time I checked (a while ago), no sign of oil in the injector harness, although I will check this again later today.

Jim

[Jas278]

For £28.00 Id try a harness first ...................

[Jimbo]

For £28.00 Id try a harness first ...................

Very good point - but even if there's no oil in it ? (which I haven't checked yet)

[Porny]

Hello...

First, get the rocker cover off and check all the plugs are correctly latched - there was actually a problem at one point the plugs not being plugged onto the injector correctly.  Also pin the harness out with a multimeter to check for faults (can even pin back all the way to the ECU - easier in a Disco)

Next...
Ideally, by process of elimination you should swap the injectors round - and put number 2 injector into a different cylinder and see if the problem follows the injector.

As it's just one injector then unfor. it does sound like the injector is to fault.  


Ian

[Jimbo]

Right, I'm off outside to try all the above - do I really need a special tool the get the injectors out, or is there a way of 'making do' ?

[Porny]

Right, I'm off outside to try all the above - do I really need a special tool the get the injectors out, or is there a way of 'making do' ?

Land Rover suggest a slide hammer arrangement... but I know other people who have just levered them out with screwdrivers/pry bars (or even a 10mm allen key - cut into a pry bar shape).

You should swap the injector coding round too... but in the short term this won't make any difference.


Ian

[andyb]

The Disco's poorly........it only seems to be running on 4 pots. If I re-start the engine then it runs fine - but not for very long (maybe 10 mins), after which it's back to 4 cylinders. My Nanocom reckons that injector 2 is having 'issues' - two error codes have been logged 'injector 2 open circuit' and 'injector 2 peak charge too long', does anyone know what these errors mean

I had exactly that fault on a TD5 Discovery. Running on 4 and the same error codes. Changed the injector loom and all fine. Have to clear the fault codes afterwards tho'.

HTH

[Jimbo]

 :D :D :D

45 quids worth of new injector loom and it's sorted ( [-o<)

I took the acoustic cover off, and unplugged the black connector at the front of the rocker cover - and oil virtually poured out of it. The oil has started to leak out of the loom at the red ECU plug, but it doesn't look too bad. I replaced the injector loom, cleaned out the connectors on the injector tops, cleaned the ECU and red connector, bolted it all back together, road tested and so far so good................

[Jas278]

 ;)

[Jimbo]

;)

Oh yes, who said Td5's were 'not for the home mechanic'.

My missus couldn't understand why I needed the Nanocom when I bought it - my local Independant charges £40 a go to interogate vehicles with his Rovacom, I reckon I've got my money back several times over now !

[steve lewis]

mine has a piggy back chip box on from twisted performance, the harness is usualy full of oil after 1000 miles, i just keep cleaning it out with WD40, (both multiblocks)