Discovery wont start. - Page 6

pflowers · #51 1st-November-2008, 23:19

Quote:

Originally Posted by The Mad Hat Man

wot happens if yu put 150 amps throw a thin piece of wire?

it acts like a fuse - and melts......
the fuseablle links are sections of calibrated wire soldered into the wiring loom. Not plug and play

like a replaceable fuse.

Never new that, can they be replaced ? Well obviously they can

but where do you buy them from ?

Looks like it will be easier to try a new ignition switch !!

pflowers · #52 2nd-November-2008, 11:36

Ok, I have made some progress, heres what I have tried.Starter motor / solenoid, if I short across the back the starter spins, if I put a 12v supply to the solenoid input the engine turns over fine ( does not start though ) So thats okThe ignition switch has a main 12v supply coming in which is then distributed to position 1 then 2 and 3 for cranking, all working normallyFound fusable links ( at last LOL ) all ok ( checked continuity )I have worked out that the wipers etc all work from position one so its position 2 that has the problem, the power is coming out from the switch so I reckon it might go to some form of relay ?? Any further ideas appreciated !

The Mad Hat Man · #53 2nd-November-2008, 11:39

yup - i think relay is in nearside footwell. You have to remove the side trim and there is a bank of them. Point of interest - there is also a bank of realys in the same position on the drivers side.

Please can you supply piccies, as I have removed the buggers and cant remember which position they go back to

.

pflowers · #54 3rd-November-2008, 08:56

Quote:

Originally Posted by The Mad Hat Man

yup - i think relay is in nearside footwell. You have to remove the side trim and there is a bank of them. Point of interest - there is also a bank of realys in the same position on the drivers side.

Please can you supply piccies, as I have removed the buggers and cant remember which position they go back to

.

Thanks for the pointer, I located the relays on both sides and checked each one individualy. The all appeared ok visually and when activated most did something, i.e. one turned on the washer motor, one the heater fan, one turned over the engine and others were wipers etc.

I am now confused because everything appears to function as it should the problem appears to be after the ignition switch, as the switch is definately ok !

I think I need a wiring diagram to trace exactly where the wires go after the switch and work my way along, are the haynes manuals any good for diagrams ?? I really should buy one.

I will try and get some photos of the relays later on and post them up for you.

mjltigger · #55 3rd-November-2008, 10:36

get a Rave, try greenoval.com i think...

pflowers · #56 3rd-November-2008, 20:33

Well, still tearing my hair out here !

Against advice got a haynes manual to check wiring diagrams, have worked out that everything that comes on at position 2 on the ignition switch is not working, I just dont get it cos there is only one 12v supply into the switch which then gets distributed to each position, when tested 12v comes out of the switch in each position and even adding a direct 12v supply from the battery to the position 2 outlet still nothing.

The only thing I can think of now is a bad earth somewhere, anyone know where a earthstrap is or something else maybe ?

Arrrrgggghhhh

Sean · #57 3rd-November-2008, 20:35

Quote:

Originally Posted by pflowers

The only thing I can think of now is a bad earth somewhere, anyone know where a earthstrap is or something else maybe ?

Arrrrgggghhhh

just use yer jump leads to temp connect from 0v on the battery to the chassis close to the starter and somewhere on the bulkhead

pflowers · #58 3rd-November-2008, 20:38

Quote:

Originally Posted by Sean

just use yer jump leads to temp connect from 0v on the battery to the chassis close to the starter and somewhere on the bulkhead

Great idea, thanks, will try in morning !

pflowers · #59 5th-November-2008, 14:28

Well, decided to trace the wires from the ignition switch, the 12v supply and position 1 wire went straight to the loom. The position 2 and 3 wire went into a black box, obviously some alarm / imobiliser then back out into the loom. Bypassed the wires and she fired straight up !!

Not sure if this is an aftermarket immobiliser or land rover ??? Looked well fitted.

Anyway just got to put it all back together know, thanks very much to all who have offered advice and help.

thebiglad · #60 5th-November-2008, 15:59

Quote:

Originally Posted by pflowers

Well, decided to trace the wires from the ignition switch, the 12v supply and position 1 wire went straight to the loom. The position 2 and 3 wire went into a black box, obviously some alarm / imobiliser then back out into the loom. Bypassed the wires and she fired straight up !!

Not sure if this is an aftermarket immobiliser or land rover ??? Looked well fitted.

Anyway just got to put it all back together know, thanks very much to all who have offered advice and help.

Hi there, I'm really glad you got it sortd out, but I feel a bit daft

as I have immobilser trouble when I renewed the ignition switch on my wife's Disco and I forgot to mention that

Oh well, it's me age guv'nr