Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877
V8 Thermometer sitting low
Happy Christmas all
Been out helping in response to floods and now temperature gauge is looking poorly.
Any thoughts chaps? Could it be the thermometer like in diesels? Heating working ok. Coolant level is OK
MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD
25th Dec 2020 10:13 pm
JackNorris
Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877
Some of the Facebook groups suggest this may be normal for the outside temperature.MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD
25th Dec 2020 11:10 pm
geoffsnook
Member Since: 13 Jun 2014
Location: south wales
Posts: 3169
As you say the diesel thermostats are know to allow water past so maybe that is doing the same i would have thought that's not ay normal temperature so not right had to do it on my supercharged sport for the same reason Discovery 3 se gone
Range rover sport supercharged here:)
26th Dec 2020 10:07 am
pjm-84
Member Since: 04 Oct 2016
Location: Hampshire
Posts: 2432
Mine just sits a smige below halfway mark and doesnt move. Once, when I first had it, it took a while to warm up. Like 15miles or so which I thought was unusual.
I have, as a precaution, changed all the sensors linked with the temparture gauge. One at the top, and I cant recall if its one or two down by the oil filter.
I did this because I left it ticking over for a while, whilst doing something on the IDD and the fan kicked in and wouldnt swtich off, plus I noticed that the temparture gauge was not showing any readings, which was odd. I switched it on and off and the temparture gauge was back to where it was originally.
26th Dec 2020 10:38 am
Duc750
Member Since: 07 Aug 2017
Location: northampton
Posts: 305
Given that, that needle has pretty much naff all to do with the operating temperature of the engine unless the ECU wants it too I wouldn't be too trusting of it until you get something that reads live data on there.
Mine has never read correctly since I've had it but my scan guage shows a good representation of the temps with oil water and transmission temps based on what the ECU is reading from the sensors not what it thinks I want to see.05 D3 V8 HSE, LR Passion tree bars, wildbear compressor guard, LRP switch panel, ARB rear locker + compressor, Trigger 6 shooter electrical system
12 RRS SDV6 HSE (Hers) - Gone and replaced with an I Pace - I can tell you now EV is not the future yet
Metalian Camper trailer
26th Dec 2020 10:39 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8069
Temp gauge on TDV6 works from two sensors, water and oil, it’s quite common for the oil sensor to fail, try disconnecting it and see if there is any difference. The gauge tends to work in 4 steps, cold, warm, normal and hot rather than a step less motion.It can when others can't,
It will when others won't,
It goes where others don't.
26th Dec 2020 12:31 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
He’s got a petrol
26th Dec 2020 1:33 pm
tgreer
Member Since: 12 Aug 2020
Location: Henley-on-Thames
Posts: 110
I have similar on my 4.4, was going to swap the thermostat/housing in the new year...
26th Dec 2020 2:59 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
See after 16 mins for thermostat change.
Though I guess the 4.4 have a plastic thermostat tower
26th Dec 2020 4:05 pm
kajtzu
Member Since: 11 Aug 2017
Location: Helsinki
Posts: 6565
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
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Last edited by Pete K on 26th Dec 2020 7:14 pm. Edited 1 time in total
26th Dec 2020 6:02 pm
kajtzu
Member Since: 11 Aug 2017
Location: Helsinki
Posts: 6565
Okay, I do that and hey show up as an URL
26th Dec 2020 6:38 pm
JackNorris
Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877
Thanks all, will do some digging
Was fine today so do wonder if i was a bit quick with it or whether it was cold.
Will get the iid onMY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD
27th Dec 2020 12:59 am
Bungle
Member Since: 07 Apr 2015
Location: Wanborough
Posts: 254
My V8 comes up to temp even in cold weather very quickly, when I first got the car I had a similar issue to you from time to time (and a fault code relating to the car being slow to come up to temp), thermostat is easy and cheap to change (the rubber seal had failed on mine) and solved it. Most motor factors keep them on the shelf so must fit a number of other engines!
Bleeding the coolant afterwards can be tricky. Open the small bleed valve on the pipe at the top of the engine (if yours has one, not all do) while you refill the coolant but CLOSE it before starting the engine otherwise I found it just drew air in which was somewhat counterproductive.
4th Jan 2021 10:44 am
tgreer
Member Since: 12 Aug 2020
Location: Henley-on-Thames
Posts: 110
Bungle, did you do just the thermostat, or did you just swap the whole housing?
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