↓ Advertise on Defender2 ↓

Home > Technical > Main relay on Defender? ** Car still randomly cutting out **
Post Reply  Down to end
Page 1 of 5 12345>
Print this entire topic · 
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 
Main relay on Defender? ** Car still randomly cutting out **

Hello

Following my other tread on my car randomly cutting out its still doing it... this morning while idle on the drive doing nothing...

Spoken to a House electrician (friend) and he thinks it more likely a main relay as ALL electrics go off including engine rather than a part or earth lead?

No codes found or showing.

So I messed about with the relays and fuses then we did around a 50 mile drive today and it cut out twice... all off just driving along.


Does anyone now which of these is a Main relay please? id it just one?





Click image to enlarge





Click image to enlarge




Thanks Smile


Last edited by Stacey007 on 2nd Oct 2017 3:08pm. Edited 1 time in total

Post #649389 10th Sep 2017 6:18pm
View user's profile Send private message View poster's gallery Reply with quote
dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4390

2.4 or 2.2 defender ?

Post #649393 10th Sep 2017 6:35pm
View user's profile Send private message View poster's gallery Reply with quote
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 

Sorry should have said 2.4 thanks

Post #649421 10th Sep 2017 8:05pm
View user's profile Send private message View poster's gallery Reply with quote
dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4390

https://www.defender2.net/gallery/albums/u...lays~0.JPG

Post #649478 10th Sep 2017 10:10pm
View user's profile Send private message View poster's gallery Reply with quote
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 

hello

Thanks is it this one then?




Click image to enlarge

Post #649481 10th Sep 2017 10:16pm
View user's profile Send private message View poster's gallery Reply with quote
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 

In fact no.2 and no.3 look to be the same relay?

So worth changing?


http://www.paddockspares.com/ywb500060-relay.html

Post #649483 10th Sep 2017 10:26pm
View user's profile Send private message View poster's gallery Reply with quote
X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 1941

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey

Hello Stacey007

Yes you are correct... 2, 3, (5, 6 and 8 if fitted are all the same) YWB500060

Worth keeping a Spare in the Vehicle, also when changing over, ensure there is a really good positive connection into its receiving connector...'nip up' receiving connector block female connections, also you can give a slight (a few degrees) twist to the spade elements on the new Relay to help it make a good connection when inserted.

My 2.4...


Click image to enlarge



Click image to enlarge


Hope you sort your issue... SKIP.

Post #649548 11th Sep 2017 11:28am
View user's profile Send private message View poster's gallery Reply with quote
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 

Thanks,


Rang dealer as want an Original one, only 6.05 ex vat

Also my local garage this morning rang an auto electrician he said it could be the Switch behind the ignition?
This part is 48.09 ex vat so let's see if changing the relay first does anything?

I hope so....

Post #649552 11th Sep 2017 11:53am
View user's profile Send private message View poster's gallery Reply with quote
X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 1941

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey

Hello again...

I'm no electrician but what is this

Stacey007 wrote:
Switch behind the ignition?

you (your auto electrician) speak of... Question

My 'logic' says that there are two things going on here...
1 every thing needs to be right to start the vehicle
and
2 certain things need to be right and maintained to keep the vehicle running...

You appears to have an issue with the second, so now the question is what are these 'factors' (systems)
that appear to be 'intermittent'... Question

A Vehicle cutting out...(while running) is worrying... Shocked
As maddening as it was at the time I think I would have preferred my intermittent Starting Problem,
eventually traced to a single connection on the ignition switch.

Good Luck... SKIP.

Post #649561 11th Sep 2017 12:35pm
View user's profile Send private message View poster's gallery Reply with quote
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 

Hello


I will collect a couple of relays after work,


This is the switch behind the ignition? , the bit you put the key in this must connect on the other end? the garage the auto electrician uses has seen this wear before now?

I will try the relay first though..




Click image to enlarge




Too be honest, myself and the garage would prefer the car to stop, not start and throw out a fault code... then we could trace the problem change the bit and all would be good,


Driving along 'waiting for it' to stop isn't the best.... Big Cry

Post #649578 11th Sep 2017 2:23pm
View user's profile Send private message View poster's gallery Reply with quote
X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 1941

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey

Hello Stacey007

OK I get it now... Thumbs Up

I also agree, 'break and stay broke' at least gives you a fighting chance...
rather than the 'will she or won't she' stress of an intermittent fault... Shocked

I too had No Fault Codes...

Click image to enlarge


Main Ignition Switch from below...Key on the left...'replaceable' Ignition Switch 'Contacts Unit' on the right...

Click image to enlarge


I didn't know this was a replacement item, there is next to no room back there, so without removing the whole unit from the steering column I can imagine its a real... Censored to do. The overall unit (assembly) has security headed bolts that look to require knocking out (drifting around with a center punch would probably work) but if you (someone) can get to the rear of this then best to leave in place...

Main Ignition Switch from above another view of set up looks to be a cross point screw (or 2) towards the rear that may be involved in securing the Ignition Switch Contacts...

Click image to enlarge


Close Up
This is the best Close Up I have...for me the 'culprit' was the Red White wire, switching the power back to the Starter Relay (No 3) the connection was just poor...

Click image to enlarge


I still don't see (understand) how when the Vehicle is running these elements if they fail would stop the Engine as their job is to start it... (someone on D2N will know)

Good Luck SKIP.

Post #649583 11th Sep 2017 3:00pm
View user's profile Send private message View poster's gallery Reply with quote
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 

^ I took the dashboard pod out the other night.


Wiggles all the wires I could find while engine running and nothing happend. You're right it looks like a pain to swap the part on the right but mechanic seems to think ok? so it's on order.


The mechanic is still at a loss why it cuts out, I'm no better off and not sure where to turn. My friend who is a house electrician says he will try and find the wiring diagram for this car and look at this. He is sure it's to do with a main relay (I've changed) and no earth straps,


I had a week out of it last week, driving fine. then on Saturday for no reason just cuts off. When I say cuts off... You're driving along (although its also stopped on the drive while doing nothing) and then nothing.

No Dials
No engine
No power steering
Mileometer and trip go off.

You roll to a stop turn it back on and it's fine again... it will drive normally for a week or more before anything happens again. NO fault codes either...



I'm going to try to reseat the relays... but not sure what I can do?

Post #654344 2nd Oct 2017 3:07pm
View user's profile Send private message View poster's gallery Reply with quote
custom90steve



Member Since: 21 Jan 2010
Location: South West England
Posts: 18400

United Kingdom 

Have a chat with Gary @ Alive.

It's starting to sound to me possibly electronic.
There is nothing to say that the ECM may need replacing if all else fails, it has been known but rare. Diesels Lives Matter

Post #654345 2nd Oct 2017 3:12pm
View user's profile Send private message View poster's gallery Reply with quote
Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3468

United Kingdom 

^ E-mail send Thumbs Up

Post #654352 2nd Oct 2017 3:36pm
View user's profile Send private message View poster's gallery Reply with quote
Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 5884

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

The OEM (non LR branded, same part) of the switch is about 17 rather than 57

When it cuts out:

Does the radio go off?
When the mileometer comes back on has the trip counter reset back to 0.0?
Do other things running (wipers) go off?
Does wiggling the key rather than switching off and back on again do anything?

There's not one single "main relay" which controls ignition switched circuits, the switch itself handles the most of the power. There is an additional ignition relay controlled by the main switch but that is for the wipers/washers, and heated seats/electric windows (if fitted).

The engine ECU detects the ignition coming on and then powers up its own relay.

Sounds like it might be the switch, with the ignition contacts opening up and cutting the power.  1988 90 Td5 NAS soft top Cool
2015 D90 XS SW Mr. Green
2006 D110 CSW (Dad's)

Futuranet Ltd: Defender Electrical specialists - www.fnltd.co.uk/shop/

Post #654354 2nd Oct 2017 3:44pm
View user's profile Send private message View poster's gallery Send e-mail Reply with quote
Post Reply  Back to top
Page 1 of 5 12345>
All times are GMT + 1 Hour

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2021 Futuranet Ltd & Martin Lewis