Hi guys thank you in advance for any advice.
Also apologise for a long post.
shes a series 2 Landrover disco 1999 or 2000 with about 160 thousand miles on the clock
Making and earth for the fuel pump
I hate these lights

So I've had this problem for awhile, been treating it like the three amigos (cleaning the ecu ports of oil and making sure there no sorting wires) final tired of this I took it to a garage to have the injector harness and the loom changed.
I was told there was no issue with either and they thought it was the fuel filter ( which I changed under a year ago) so not that they changed it anyway.
Now to much money down the line, and I ended up being towed home 150 miles as she wouldn't start.

So the starter motor and engine are going when ignition is turned, but no fuel pump, the aa bloke tested all the relays and fuses said no issue so suggested it was a wiring issue. So I tried making a new earth after some advice from a mechanic which worked but this was along side recharging the battery as also resetting the ecu. She started yay success until the next time I tried and same issue again (losing the will)
So a friend tried by passing the relay and forcing the fuel pump to work which did so pumps fine but still the sensor lights stopped the engine starting.
Searching through all the thread and forum posts I could find some similar such as leaky sun roof causing terminals to corrode so checked the passenger side terminals in the foot well and my rear air suspension lost all compression.
And at this point 3 days in I've got to the end of what I can do.
So please please please someone help, otherwise I might put a hammer through the windscreen soon

Cheers Aiden

 

Hi Aiden that ground will not work very well that tie down has a rubber bushing. But you really need to the codes read so you know what is actually going on.

But as I understand the issue :

1. You have a number of lights on the dash - which ones exactly
2. Your pump works if you bypass the relay - have you changed out the relay ? I suspect the ECM will not allow a start with out that relay in place.

Functionally your Disco turns over but does not start, this does not necessarily mean the fuel pump is shot.

It could be:

1. the crankshaft position sensor - most likely to me
2. Coil pack
3. fuel pump, associated wiring, fuse or relay
4. Isolator switch - I believe the kills everything not sure on this one

But you need your codes read and then start diagnoses there, right now you a really guessing and that gets frustrating and expensive