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RichyB1967

Member Since: 16 Feb 2014
Location: Dundee
Posts: 11

TD5 problem, help please

Hi All,

New to the site, wanted a Defender for a long time and bought one 6 months ago. Live in Angus in Scotland.

Didn't know this site existed until I started searching for answers to a problem i have with a 2002 Defender pick up TD5. Drove into town yesterday, after a 10 minute stop to go into a shop, couldn't start the engine. The ignition lights apart from the glow plugs warning light come on, the engine cranks over, but doesn't fire, and there's a yellow relay under the drivers seat chatters all the time the ignition is on. I did replace the fuel pump last week, and the battery was disconnected for this, but the terminals are tight. I get a reading of 12.4 volts from it, but I'm wondering if the high resistance between the neg terminal post and body is having an effect.

Any advice greatly appreciated

Richy

16th Feb 2014 11:11am

K9F

Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

Where are you taking the negative reading from on the body? Could be a 'red herring' I would take it adjacent to where the negative is strapped to the vehicle or a known circuitry earth point. If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!

16th Feb 2014 11:19am

bpman

Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black

welcome to the site, it's probably worth searching for "Oil in the loom", this was a fault on pre-2003 defenders, and caused all sorts of intermittent ignition issues.

16th Feb 2014 11:23am

RichyB1967

Member Since: 16 Feb 2014
Location: Dundee
Posts: 11

Hi K9F

Thanks for the reply.

I took the resistance reading between the neg term post on the battery and the nearest untainted screw on the dashboard. There is no negative connection to the body, it goes to the gearbox only

16th Feb 2014 11:24am

RichyB1967

Member Since: 16 Feb 2014
Location: Dundee
Posts: 11

Thanks BPman,

Will check it out. Would I look for it at the ecu end or the engine rocker cover end?

16th Feb 2014 11:27am

bob neville

Member Since: 30 Apr 2009
Location: Marbella
Posts: 3248

Pull the red plug at the ecu end and look for signs of oil.

Bob 2015 Jaguar XE240 R Sport - goes like ....... !!
2013 Defender 90 CSW - sold
2009 Defender 110 Double Cab - sold
2001 TD5 90 CSW - offroad project - sold to a forum member
2011 Porsche Boxster - for the sunny days !

16th Feb 2014 11:31am

barbel jim

Member Since: 12 Dec 2012
Location: Northants
Posts: 1435

Sounds exactly the same as a problem I used to get

There are 2 yellow relays below the drivers seat, (forget what they are for) Try wiggling them (the chattering one first) The contacts sometimes become worn

I tried tightening up the connectors, new relays , but the long term fix was to cable tie the relay in tight

16th Feb 2014 11:44am

RichyB1967

Member Since: 16 Feb 2014
Location: Dundee
Posts: 11

Thanks everyone,

I just wanted to say that this site is much friendlier than another site I've looked at!

Richy

16th Feb 2014 11:47am

defninety

Member Since: 13 May 2010
Location: Warwickshire
Posts: 38

1985 Defender 90 Td5 XS CSW Bonatti Grey

Sounds like fuel pump relay sticking. If you ignition on and can't hear the pump and the glow light doesn't come on then it is usually that. Take the first yellow relay out from under the seat and put it back in a see if it then starts.

16th Feb 2014 1:36pm

Lou Sparts

Member Since: 15 Apr 2012
Location: Kent
Posts: 1501

2005 Defender 90 Td5 XS CSW Zambezi Silver

The relay should,nt "chatter" if it does then it is switching on and off i would have a good look at that first,As previously mentioned check the red plug on the ECU (under the drivers seat) and check for oil if present this is a easy cheap fix for which there are plenty of threads on here.

Let us know how you get on and welcome to the forum

2005 Td5 90 XS

Steve

16th Feb 2014 1:39pm

Laurie

Member Since: 22 Feb 2008
Location: Sussex, England
Posts: 2897

2005 Defender 90 Td5 XS CSW Bonatti Grey

I had exactly the same problem.
Replaced a (5 year old) battery that seemed in perfectly good condition and the problem went away.

16th Feb 2014 1:42pm

RichyB1967

Member Since: 16 Feb 2014
Location: Dundee
Posts: 11

Hi All,

The wiring loom red plug at the ecu is not wetted from oil, the relay is still chattering, could the newly fitted fuel pump be at fault? The pump make was vdo who I'm told make the genuine LR pumps. Cost £300 from Mann Autos in Laurencekirk who are reputable and well experienced suppliers and repairers. I hope it's not a faulty pump, was a difficult job to change it. Have tried tightening the wires around the relays.

Thanks again,
Richy

16th Feb 2014 3:44pm

bga86

Member Since: 17 Jan 2014
Location: Here and there
Posts: 205

Rich if the temp gauge goes into the red when you turn ignition on then it's a fault with the power control relay under the drivers seat, a tap on top of them usually does the trick to get it started

16th Feb 2014 4:28pm

Laurie

Member Since: 22 Feb 2008
Location: Sussex, England
Posts: 2897

Try a substitute battery.
Swap the yellow relay with another one (assuming you've got two yellow relays)

16th Feb 2014 4:35pm

RichyB1967

Member Since: 16 Feb 2014
Location: Dundee
Posts: 11

Hi bga68,

Just removed the power relay, took the cover off, checked continuity of the coil 50 ohms! but it doesn't energise when the ignition is switched on, I guess it pulls in when the engine starts. There's a couple of the yellow relays in the fuse box in front of the gear stick, changed out with one of the 30 amp ones, still chattering and no start, all of the large fuses/ links are healthy.

Mmmmm not sure where to look next

Richy

16th Feb 2014 5:44pm

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