Disco 300tdi not turning over

Gav1978 · Jul 28, 2017

having a issue with my disco 300tdi not turning over used key fob to turn off immobiliser light on dash gone off and nothing when try to start, entered code into door thinking I might have problem with immobiliser light on dash off again still nothing, took belt off as was told try that again nothing cleaned connection on earth still nothing put wire from battery live to starter motor check that it turns over but nowt else anyone know what it might be I got a discovery 1 300tdi S reg

Nigel1943 · Jul 29, 2017

Do I take it the direct feed to the starter worked? Could be your ignition switch.

Gav1978 · Jul 31, 2017

As far as I'm aware I'm not getting 12v to the starter, I believe I've checked fuses and relays but nothing came up when I put a live direct from battery to starter it cranks but no start.

discool · Jul 31, 2017

Symptoms that u may have an immobiliser issue, generally it has two functions, inhibit the fuel supply and the starter.
You have provided a temporary bypass to the starter to get the engine to crank. Now you need to provide a bypass to override the stop solenoid which I believe diesel vehicles have, or what ever controls your

️ fuel.

Sent from my iPad Air on a train.

Gav1978 · Jul 31, 2017

If it was immobiliser then when I put the eka code in surely that would override it, now I'm not 100% sure it is the correct code I have no alarm sound so I don't get the bleeps after entering the code, how ever when I put the code in the dash light for the alarm does stop flashing which says it has worked I'm not very good when it comes to immobilisers but like I said if the light goes out surely it has been turned off??

Disco1BFG · Jul 31, 2017

Presuming it is a manual, at that age you should have the DDS VE pump - which has three black wires into the fuel solenoid cover on the "back" of the FIP - a search on here should provide more info. It is possibly the standard failure of the spider unit in the dash - a pig to get at, but usually easily fixed with a soldering iron round the dry joints, or a bypass from the usual places. ( DDS = digital diesel solenoid ).

If it is an auto, with the EDC pump, then you'll need to get some codes read, to get some idea of what's going on.

Disco1BFG · Jul 31, 2017

Gav1978 said:
If it was immobiliser then when I put the eka code in surely that would override it, now I'm not 100% sure it is the correct code I have no alarm sound so I don't get the bleeps after entering the code, how ever when I put the code in the dash light for the alarm does stop flashing which says it has worked I'm not very good when it comes to immobilisers but like I said if the light goes out surely it has been turned off??

again presuming manual, then, IMHO, bypass the starter circuit, and the fuel solenoid supply first, and prove that the engine still wants to play ball - then sort out why its being "silly"!

discool · Jul 31, 2017

Gav1978 said:
If it was immobiliser then when I put the eka code in surely that would override it, now I'm not 100% sure it is the correct code I have no alarm sound so I don't get the bleeps after entering the code, how ever when I put the code in the dash light for the alarm does stop flashing which says it has worked I'm not very good when it comes to immobilisers but like I said if the light goes out surely it has been turned off??

The light extinguishing after the correct code has been entered sounds about right from memory, that's something I'd have to swat up on as I've never had to enter the code, but... the Emergency Key Access code is not for overriding a partial or non-functioning security/ immobiliser control unit.
The purpose is to override the security system if your unfortunately find you find you cannot gain access or start the engine because of a missing or broken fob in an otherwise fully functioning vehicle security system.

Sent from my iPad Air on a train

Jake ingleby · Jul 31, 2017

I had a problem with my immobilizer ended up using a bypassit but still had problems turning over ,turns out it was a dodgy spade connecter on the starter motor

Gav1978 · Jul 31, 2017

I've had AA out today said dodgy starter relay and wiring located under bonnet near fuse box replaced still nothing I've cleaned up the spade connection on starter that not helped its driving me crazy now I've done so much to it over the last year a massive part of me is now saying give up as I've had 5/6 "mechanics" look at it still no joy

Gav1978 · Jul 31, 2017

Think I'm gonna have to strip the dash down see if can put the spider plug in to bypass alarm if o can as been told not got one on late 300tdi's

Gav1978 · Jul 31, 2017

If there is anyone close to alcester warwickshire that can genuinely help get in touch could be saving my sanity and a disco not getting sold off

neilly · Jul 31, 2017

Have you checked to see if you have 12V at the starter solenoid spade connector when the key is turned as if it is being cranked?

Cheers

Gav1978 · Jul 31, 2017

neilly said:
Have you checked to see if you have 12V at the starter solenoid spade connector when the key is turned as if it is being cranked?

Cheers

AA did said nothing there and that's when he said it probably was relay near fuses under bonnet as that was corroded

neilly · Jul 31, 2017

Gav1978 said:
AA did said nothing there and that's when he said it probably was relay near fuses under bonnet as that was corroded

So silly question time, have you checked it now the relay has been changed?

Is there power at the relay?

Cheers

discool · Jul 31, 2017

Gav1978 said:
AA did said nothing there and that's when he said it probably was relay near fuses under bonnet as that was corroded

The glow plug timer relay then.

Gav1978 · Jul 31, 2017

discool said:
The glow plug timer relay then.

I think that's what just replaced is that what's located under bonnet by fuse box?

Gav1978 · Jul 31, 2017

neilly said:
So silly question time, have you checked it now the relay has been changed?

Is there power at the relay?

Cheers

Unfortunately I have no way of checking as I don't have the equipment to try it at moment but from what's happening I guess not but guessing not best idea I'll try confirm tomoz when get back over to disco as on my dads drive at mo

Gav1978 · Jul 31, 2017

Limited tools limited knowledge unfortunately which hinders things quiet a lot

neilly · Jul 31, 2017

PM sent to you.

Cheers

Disco 300tdi not turning over

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