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Buz



Member Since: 24 Jan 2014
Location: Forest of Dean
Posts: 238
United Kingdom 1987 Defender 90 200 Tdi HT Barolo Black
I removed the original and took it with me to my local LR parts place (BG Landrover) I have PRC8593 in my Disco 200
Post #745241 11th Dec 2018 8:55pm
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OJ



Member Since: 23 Nov 2018
Location: North of Edinburgh
Posts: 121
Scotland 2015 Defender 90 Puma 2.2 XS CSW Corris Grey
Martin wrote:
That's not the right sensor for a Disco 200 Tdi in a Defender.

The right one is PRC6663 (as in my first reply)


Martin wrote:
Is it a Disco engine?

If so it might want the sender swapping to PRC6663 which fits the 200 Tdi Disco engine but is the correct type for a Defender gauge (it's the 2.5TD/NA/etc sensor).


Ooops got that one mixed up with the 300 Embarassed missed your earlier post Bow down
Just keeping you on your toes Martin, well spotted
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Post #745255 11th Dec 2018 11:09pm
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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
Buz wrote:
I removed the original and took it with me to my local LR parts place (BG Landrover) I have PRC8593 in my Disco 200


OK your Disco engine must now have a Defender thermostat housing to take the 5/8" UNF Defender sensor. At least it's correct for the gauge Smile  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #745287 12th Dec 2018 10:22am
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Buz



Member Since: 24 Jan 2014
Location: Forest of Dean
Posts: 238
United Kingdom 1987 Defender 90 200 Tdi HT Barolo Black
Latest Update:
Checked the gauges and the only thing I could see was the earth that was connected to the securing bracket didn't actually go to earth!! This has now been corrected. Ive now taken it on a test run and it still runs hotter than it used to (see attached photo's) this may be down to the fact the old Thernostat was 82c but the new one is 88c! Think I'll run it carefully for a while. When checking the temps:
Thermostat Housing about 70c
Top of Rad 60c
Bottom of Rad about 30c
Top of engine block 80c
.
Right now to work out why I have no lights, even dash ones, and why the alternator or PAS Pump screens often (there may be more simpletons questions coming your way soon, you have been warned but its great doing the work and not paying someone to do it for me).....the joys of LR ownership Smile
Post #745290 12th Dec 2018 11:09am
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OJ



Member Since: 23 Nov 2018
Location: North of Edinburgh
Posts: 121
Scotland 2015 Defender 90 Puma 2.2 XS CSW Corris Grey
Hi Buz
That sounds a lot better with the temp guage, what’s happened to your lights, sounds like a wires pulled off somewhere, check if there’s any power going to the light switch, brown wire, has something been disconnected ? check your earths are all ok.
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Post #745353 12th Dec 2018 8:13pm
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Buz



Member Since: 24 Jan 2014
Location: Forest of Dean
Posts: 238
United Kingdom 1987 Defender 90 200 Tdi HT Barolo Black
Hi OJ,
The lights ended up being a nice simple one, it was the connector, it looked ok but after I broke it down, tested the switch and then put it back together it all worked...another to keep an eye on Wink
I'm now replacing the binnacle mount from plastic to a new metal one....so getting there slowly....
Thanks for all the guidance Smile
Post #745373 12th Dec 2018 8:43pm
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OJ



Member Since: 23 Nov 2018
Location: North of Edinburgh
Posts: 121
Scotland 2015 Defender 90 Puma 2.2 XS CSW Corris Grey
Hi Buz
That’s good news, your getting through the problems, well done Thumbs Up
OJ
Post #745400 12th Dec 2018 9:50pm
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Topvaruk



Member Since: 25 Apr 2018
Location: bratislava
Posts: 48
Slovakia 2010 Defender 90 Puma 2.4 ST Aintree Green
resurrecting an old thread
have done a lot of reading but cant see a definitive answer to my variation of this problem

I have a 90 with a disco 200 tdi engine. It came with a naff VDO temp gauge. I wanted to get back to stock so I got hold of a genuine 200tdi temp gauge (AMR2631) as i thought this would be the most simple route. I now get very high indicated temperature (engine is barely warm).

my question is ...... which is the right sensor to match the 200tdi gauge?

steve parkers say PRC2506 as part of their conversion kit but I suspect that's to work with a 2.5 N/A or TD gauge (I have this and ironically when I pulled out the old sensor its the same) has white body

or PRC6663 with the black body as martin suggests above

again just for clarity genuine 200tdi gauge 2010 90 LHD soft top
2010 110 XS
1985 90 soft top
Post #1031732 16th Apr 2024 6:37am
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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
If it's got the Disco thermostat housing, you need a sensor with M16x1.0 thread.

For a 'Defender' gauge, this sensor is PRC6663  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #1031852 17th Apr 2024 12:08pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2223
United Kingdom 1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey
Vdo gauges are very good normally when paired with a vdo sender, how is it naff ?
Mo The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey
Post #1031855 17th Apr 2024 12:50pm
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Topvaruk



Member Since: 25 Apr 2018
Location: bratislava
Posts: 48
Slovakia 2010 Defender 90 Puma 2.4 ST Aintree Green
Thanks Martin 2010 90 LHD soft top
2010 110 XS
1985 90 soft top
Post #1031860 17th Apr 2024 12:56pm
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Topvaruk



Member Since: 25 Apr 2018
Location: bratislava
Posts: 48
Slovakia 2010 Defender 90 Puma 2.4 ST Aintree Green
Mo Murphy wrote:
Vdo gauges are very good normally when paired with a vdo sender, how is it naff ?
Mo


Works fine …. Just looks a little off compared to the OEM gauges 2010 90 LHD soft top
2010 110 XS
1985 90 soft top
Post #1032667 24th Apr 2024 1:01pm
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Topvaruk



Member Since: 25 Apr 2018
Location: bratislava
Posts: 48
Slovakia 2010 Defender 90 Puma 2.4 ST Aintree Green
guage/sender mismatch solved
cracked it!

correct sensor fitted and found the gauge wasn't earthed - guessing it works like a Wheatstone bridge.

now reading spot on


thanks Martin and all 2010 90 LHD soft top
2010 110 XS
1985 90 soft top
Post #1032757 25th Apr 2024 6:06am
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