 | Home > Td5 > VDO Vision coolant temp gauge. |
 
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 933   
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Yes but… not sure which gauge temperature range would work with it. Perhaps others with more insight will chime in with more details. Why do you want another gauge? 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) |
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16th Apr 2023 1:05pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2638  
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You should rather get a proper Engine Monitoring System, like the Madman, and you can see the coolant temp (and other temps) in real time 
Have a look here: https://www.defender2.net/forum/topic28536.html -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged 
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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16th Apr 2023 3:41pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410 
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Well I tried this and it did not work. The problem I found is that the temp gauge is driven not by the sensor but by the ECU and it reads very low even when up to temp. The conclusion I came to was that the Defender gauges work at a limited volt range unlike via the temp sender which would work at the full 12v. The solution for me was to install a Madman gauge and I haven't looked backwards since. Incredible tool to have on-board and it has saved Miffy's engine and gearbox a bunch of times. Worth every pence and pound that it cost. |
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17th Apr 2023 8:41am |
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| murph81 Member Since: 11 Sep 2022 Location: Ireland Posts: 63  
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Thanks for clearing that up!
I would love to get the Madman EME but it's very expensive, I think I'd buy a Nanocom first. Just trying to sort an possible overheating/temp gauge issue at the moment. |
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17th Apr 2023 10:14am |
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| rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2227 
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Td5 temperature gauge is controlled by a pulse-width modulated signal from the ECU. Like most modern cars, it does not accurately reflect the real engine temperature. It will sit static in the same middle 'healthy' position even though the engine temperature may vary somewhat. Only if the engine temperature moves out of the 'healthy' range will the gauge shoot up to indicate an overheat condition.
It is a while since i bench tested the gauge but I seem to recall once it had reached the normal operating temperature position, it only had one or maybe two 'hot' positions. If you really want an aftermarket VDO gauge then you would need to run a new wire direct to the sender and fit an additional VDO sensor. Best way of measuring live engine temperature is via Nanocom or similar. This will however only show the temperature of the water near the sender so might not indicate immediately overheating if the water is no longer circulating (e.g. pump failure or blocked radiator). An infrared temperature gun is often useful for measuring specific locations. Cheers, Steve 02' 110 TD5 Double Cab Rebuild Thread |
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17th Apr 2023 10:37am |
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| murph81 Member Since: 11 Sep 2022 Location: Ireland Posts: 63
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Thanks Steve, I'm booked in to have temperature confirms on Nanocom tomorrow.
I've ordered a Binowl onboard computer also so I can monitor things in future. Can't justify buying a Nanocom at the moment. |
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25th Apr 2023 8:51pm |
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| Hazza Member Since: 10 Jan 2011 Location: North Yorkshire / Leeds Posts: 214 
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You can sneak the VDO sensor into the coolant outlet from the block. I don't have a photo but there's space and material to drill and tap. 1990 Defender 110 200TDI Camper - now converted to Td5 power
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26th Apr 2023 4:03pm |
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| Chris86 Member Since: 15 Jul 2014 Location: South Yorks Posts: 789 
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It is possible to have the settings in the ECU changed to make the temperature gauge more useful and perform more like a 'normal' gauge.
Dan at Storm tuning does it. https://stormtuning.com/ Chris |
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26th Apr 2023 5:47pm |
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