Disco 1 Newbie immobiliser woes

Guys,

I've had a few issues with my non starting D1 300tdi auto. I'm certain it's the immobiliser / alarm.

History: recently bought, it's dog rough but seemed to be a decent runner. Central locking was iffy then stopped working altogether. I went away for a week & was told my hazards were flashing intermittently & when I got back the battery was dead. Managed to jump start it for the 1/2 mile trip home & the indicators (not off hazard switch though) flashed all the way back. The next day it was dead as a door nail so I've had the battery on charge for a week.

I've tried to crank it over today & a few problems

1. Indicators flash intermittently
2. Red immobiliser is usually off but will sometimes strobe, stay solid (on) or flicker with the indicators. When it strobes or flickers I can hear a buzzing that sounds like it's coming from behind the glovebox
3. It will sometimes try to crank, other times nothing or click violently with the relay in the driver footwell flashing

I've grounded the relay which now allows the engine to crank but not catch, this I think is down to the fuel cut off solenoid (I'm an Internet expert from reading forums today)

My problem is that I'm not too mechanically minded, I've found the fuel pump & I think I've found the anti-tamper box that has 3 torx screws & a bolt I think I'll have to drill.

I need advice whether I'm on the right track & should see 3 wires under the cover when I drill it off then which wire I have to connect to the switched live.

Photos below of the engine

Thanks in advance

https://flic.kr/p/GuJg1E - 300tdi?

https://flic.kr/p/GRQwLW - anti tamper cover?

Still really struggling with this problem, I've got fuel to the pump but nothing to the injectors. I'm unsure what to do. It cranks ok, when I switch on the ignition I can hear the fuel pump buzzing, I've tried to connect the black/white wire to 12V which creates the same buzzing, always no fuel to the injectors.

The vehicle is an N reg- '95

See image link to another photo of the pump & where I've connected to 12V

https://flic.kr/p/G6cQ2n

Really need some help please

I'm happy to pay someone that knows how to sort it & is prepared to give me a hand

I don't know anything about the D1 300tdi, however on the D2 we have an EKA code which enables you to manually switch off the immobiliser.

Not sure if the D1 has that function, though. Sorry I can't be of more help.

I don't know if this is any help:

https://www.landyzone.co.uk/land-rover/discovery-300tdi-immobiliser-bypass-the-easy-way.57839/

Thanks for the reply, there doesn't seem to be a spider unit as I've got the dash out & can't see anything that resembles it, the door lock on the drivers side is knackered (key won't turn!)

The D2 doesn't have a spider unit, see I don't know anything from the D1 300tdi.

I found this though:



It seems the Disco 1 has a EKA code. You can get it from the LR dealer with your VIN number and prove of ownership I think. I got mine with my nanocom (diagnostictool for D2)

GlowingBulb said:

Still really struggling with this problem, I've got fuel to the pump but nothing to the injectors. I'm unsure what to do. It cranks ok, when I switch on the ignition I can hear the fuel pump buzzing, I've tried to connect the black/white wire to 12V which creates the same buzzing, always no fuel to the injectors.

The vehicle is an N reg- '95

See image link to another photo of the pump & where I've connected to 12V

https://flic.kr/p/G6cQ2n

Really need some help please

I'm happy to pay someone that knows how to sort it & is prepared to give me a hand

Click to expand...

try bypassing the sedimenter behind the rear wheel they rot through and draw air into fuel system

The EKA is only a facility to remobilise the vehicle when there's issues with the key fob, not to overcome the electrical issues which u have stated, and are copied below.

"1. Indicators flash intermittently
2. Red immobiliser is usually off but will sometimes strobe, stay solid (on) or flicker with the indicators. When it strobes or flickers I can hear a buzzing that sounds like it's coming from behind the glovebox
3. It will sometimes try to crank, other times nothing or click violently with the relay in the driver footwell flashing "

There you go, two people with much more knowledge than me.

Sounds like your stop solenoid isn't operating. ie not being energised and so not opening the valve. This stops the flow of fuel. It may not be working because the immobiliser has a fault. The immobiliser is programmed to control it. Or, the stop solenoid is broken ie broken in the shut position. Or, something has happened to the live supply to it.
So I would check the live supply. It's a small wire with a spade terminal on the end (on my 300Tdi Defender it is anyway) Check it's not broken and has a good electrical contact to the stop solenoid terminal. If that doesn't work I think you can run a temp feed to the valve. ie a long wire ran from a 12v live feed to the stop solenoid terminal. This should bypass the immobiliser, opening the valve so fuel will flow. Not a permanent solution, but at least you will see if it starts.
There's not a lot worse that immobiliser problems, I've got one myself at the moment
Hope this helps.

Thanks for the replies guys, if I've got fuel to the pump but not injectors I'd assume that the would be OK? I'll have a look tomorrow though.

I'm assuming that there's something wrong with the vehicle security from the initial symptoms as though the alarm was going off (indicators flashing) & things have gone downhill from there.

Is it possible to just put a new injector pump in? Preferably 1 without any security with it?

I'm scratching round in the dark here but I'm certain that the security (that I can't find behind the dash) is the culprit

It's up to you, but you might have to start considering insurance ramifications if you don't have an immobiliser. Are you sure the injector pump is goosed?

I think it's the EDC fuel pump, does running a live feed to the stop solenoid still work?

Don't see why not, It guarantees a supply to the solenoid and so makes sure it's open. You could check your temporary feed is live with a multimeter or 12v bulb. Come to think of it, you could check if the original feed goes live when you try to start the disco! If it doesn't, put a temp live feed in. If it starts then it will probably indicate the immobiliser is not switching the supply on.

it will be EDC, don't think you can just jump the solenoid, I had all sorts of problems with mine when water got in the alarm box under the glove compartment, paid a lot of money to a local garage that said they knew what they were doing, Landrover specialist with testbook, took them a whole day to work out how to reprogram the new box at my expense. Good luck with it.

by the way, there is no spider on the edc auto.

Thanks hifly, I've finally waded through everything I've read on forums & can now say from 1st hand knowledge that;

300tdi auto with EDC does not have a spider immobiliser
It's possible to get it cranking over on the key by grounding the ignition relay
Putting 12v across the stop solenoid doesn't allow fuel to get to the injectors

Seems my next port of call is to take the green alarm ECU under the glovebox to a specialist & see what can be done

I doubt many D1's with EDC have been stolen the old fashioned way of hotwiring them

Sorry, mate. Thought that would work. I'm sure I've read of others doing that successfully. Worth a go, I suppose.

Dude check out my thread on this or pm me and I'll tell you how I removed all this **** from mine!

Cheers buddy, I've sent you a PM

the wire to the solenoid worked on my 300tdi it was wired through a solenoid to a switch on the centre console it started and stopped engine fine