Thread: Thought I had an injector loom issue?

It's starting to sound like some of the fuel pump threads I've read
Lack of fuel available at higher usage levels.

I'm heading that way too, I've ordered a new fuel pump and filter.
I've not had a lot of experience with discos but usually a pump works or it doesn't. Hopefully I'll find out tomorrow when the parts get here.


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Well I've had a couple fuel pumps go over the years and none have just stopped they all played silly buggers when I didn't want it then when I took it to the mechanic and it run perfect lol and on my wrx it still drove but just had no power even when boost come on

Changed the pump and filter and it still won't start!
I've checked the injector wires for circuit between the ECU plug and the plug into the injector loom too and all is good.
What's left? Replace ECU? Does the injector loom itself fail under the rocker cover?
I get this fault on the nanocom
(28,1) injector 1 peak charge short ,
That's what led me to check the circuits between the ECU and the injector loom plug.
Any ideas appreciated.


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Can you hear the pump run for a few seconds when you first turn on the ignition?

Definately.


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Did you purge the fuel delivery system?

From the workshop manual:
Fuel system purging
If the vehicle runs out of fuel, or the fuel level is so
low that the fuel system draws air into the fuel rail,
the fuel rail will need to be purged before the engine
will start. This can be achieved by following the
procedure below.
If this procedure is carried out on a vehicle that
has not run out of fuel or otherwise drawn air into
the fuel rail, it can lead to the engine flooding and
failing to start.Purge
1. Turn the ignition switch off and wait 15
seconds.
2. Turn the ignition switch to position II and wait 3
minutes (this ensures that the fuel system
purges all the air from the fuel rail within the
cylinder head).
3. Fully depress the throttle pedal.
4. Keeping the throttle pedal fully depressed,
crank the engine.
5. As soon as engine speed exceeds 600 rev/min,
release the throttle pedal and the ignition
switch.The engine must not be cranked
continuously for more than 30 seconds at
any one time.
6. If the engine fails to start, repeat the above
procedure.

Originally Posted by splinter

I get this fault on the nanocom
(28,1) injector 1 peak charge short ,

Are you clearing the fault and it returns after you try to start the engine?

Check out the last post in Mturri's post here:

http://www.aulro.com/afvb/discovery-...e-harness.html

While it's unlikely you have the same problem the pinouts for the injector wiring back to the ecu should help. Check that you've got continuity on the injector wires and earths, and also check adjacent wires to make sure none are shorted out.

To do this unplug the plug from the head and the red ecu plug and check end to end, and then put a probe on #1 and then touch the probe to all the other connectors in the plug - if you find continuity between two or more pins you have a short.

The ECU is way down your list of potential problems - the ECU controls the fuel pump relay for starters.

cheers
Paul