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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 265

United Kingdom 
TD5 glow plug relay - wher is it located ?
Hi,
Need to replace the glow plug relay on my 1999 TD5 110 .... any idea where it is ?

Its not under the drivers seat, there's only 1 yellow relay there and i guess thats the fuel pump

Dont think its in the fusebox behind the gear lever either

Best
Alex Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #977864 13th Jan 2023 2:08pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6604

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
It is supposed to be under the seat box.

Glow plug relay from wire colours:

Brown
Yellow/Black
Brown/Orange
Green/Blue

Fuel pump relay from the wire colours:

White/Purple
Purple/White
Brown/Orange
Blue/Purple

In descending wire size order.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #977866 13th Jan 2023 2:20pm
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Penfold_6290



Member Since: 22 Sep 2021
Location: Dorset
Posts: 316

United Kingdom 2002 Defender 110 Td5 CSW Epsom Green
The electrical library says it's C0215 which is the black relay below - (under the drivers seat)



Click image to enlarge
Post #977871 13th Jan 2023 2:50pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 265

United Kingdom 
Martin wrote:
It is supposed to be under the seat box.

Glow plug relay from wire colours:

Brown
Yellow/Black
Brown/Orange
Green/Blue

Fuel pump relay from the wire colours:

White/Purple
Purple/White
Brown/Orange
Blue/Purple

In descending wire size order.


And you're absolutely correct . The 2nd relay was slightly hidden from view due to fact that it was black and in a dark mucky party of the seat box with the colours you decribed.

The replacement I got from our local LR motor factor is a PRC6913 timer relay for 200/300TDI and TD5 models, it hell of a lot larger than the one thats in there Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #977880 13th Jan 2023 3:42pm
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Penfold_6290



Member Since: 22 Sep 2021
Location: Dorset
Posts: 316

United Kingdom 2002 Defender 110 Td5 CSW Epsom Green
You've been sold the wrong relay, you don't need the 200/300Tdi timer relay. The glow plug relay is controlled by the ECM on the Td5, it is a 70 amp relay, part number YWB101300.



Post #977882 13th Jan 2023 4:00pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6604

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Wrong part, that’s correct for a Tdi but the Td5 uses a standard 70A relay - the ECU does the timing.

YWB101300 is the LR part num but any 70A relay from your motor factors will do.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #977883 13th Jan 2023 4:04pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 265

United Kingdom 
Many thanks for all the replies

Yes you are correct it was the wrong relay. Have to say, after talking to my supplier about it, they rang me back and told me the same thing. Their datrabase said that was the only relay for glow plugs for a TD5. After a bit of searching they identified the correct relay, have ordered one and will be ready to collect tomorrow.

Rgds
Alex Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #977927 13th Jan 2023 9:06pm
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 930

Canada 2000 Defender 110 Td5 XS CSW Epsom Green
FWIW, I labeled all my relays when I bought my Td5 years ago simply to make it easier to trace any possible faults when out in the wilds. Food for thought. 🤷‍♂️



Click image to enlarge
 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #978015 14th Jan 2023 4:01pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 265

United Kingdom 
Good idea
Smile Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #978033 14th Jan 2023 5:37pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 265

United Kingdom 
So today I received the new relay. Before putting it in the socket i sprayed it liberally with contact cleaner .... and in the process the thick brown cable fell out of the socket .... minus the spade connector ....

Nect step order some replacemnet spade connectors ... one step forward ... slight shuffle back Smile

A Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #978036 14th Jan 2023 5:41pm
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
So your relay still might be OK. Very Happy Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #978060 14th Jan 2023 6:42pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 265

United Kingdom 
ermmm possibly .. but its at least 12 years old so probably good to replace it anyway Smile Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #978105 14th Jan 2023 9:51pm
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Penfold_6290



Member Since: 22 Sep 2021
Location: Dorset
Posts: 316

United Kingdom 2002 Defender 110 Td5 CSW Epsom Green
You probably ought to get yourself one of these and make good all your connections.

https://www.vehiclewiringproducts.co.uk/p-...-70a-relay
Post #978106 14th Jan 2023 9:54pm
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alexatnd



Member Since: 19 May 2015
Location: Yorkshire
Posts: 265

United Kingdom 
So, curent state of things

Crimped and reinserted brown power feed cable into exsiting relay socket.
Inserted new relay
Turned power on and could feel/hear the relay engaging
Disconnected one of the glow plug lines and attached a voltmeter
9.5v ... seemed a bit low
battery has one of thise indicators saying ok/charge/dead
disconnected battery
overnight charge
next day reconnected, turned key and ......
... wouldnt start ...
.. primed the fuel system ...
... endless cranking and eventually started ...
... ran for 45 mins got to temperature ...
... switched off ...
.. tried to start again ....
.... wouldnt , not a peap!

So at this point I've got a warm engine thats been runnig
cant be air/ fuel issue as it was running and literally off for 15 secs ,so am thinking its CPS related, but I'd replaced the one that was in there ..

... thing is on the one i took out the end looked a bit mangled and the sensor as flush with the body of the sensor whereas a brand new one has the sensor a few mm proud of it ...

looked at lrworkshop.com and according to the diagram ... theres' supposed to be a spacer there, between the sensor and the block .... there wasn't

.. going to check tomorrow and look at the CPS i just put in ... suspect will have to purchase new sensor and spacer!

onwards and upwards ! Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County
Post #979163 21st Jan 2023 8:27pm
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