Pere
Member Since: 18 Feb 2018
Location: Manresa
Posts: 9
  
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| Temperature needle indicates lower than normally |
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Hi there,
I have a MY06 Discovery-3 2.7 TDV6 (diesel) that has having problems to reach the normal engine's temperature.
A few days ago I tried to change the water outlet connection - part number LR073372 - in a preventive way, but I finally didn't do it, since when I tried to unplug this hose ...
... the coolant started coming out and I quickly plugged the hose again. Fortunately, only a slightly amount of coolant was spilled (50 ... 100cm3). Then, I realised that I didn’t have enough coolant at home to refill, so I had to stop, mount it all again and leave it for later. I haven’t done it yet.
Since that day, it seems as if the engine takes longer than before to be warm and the temperature needle becomes stabilized at a lower temperature than normally. You can see it in this picture, that was taken after half an hour running engine.
After adding some coolant and purging the cooling circuit, the problem has not been solved. The coolant level it's OK and the interior heating / cooling system runs well.
I'm almost sure there's an issue related to the coolant thermostat and I would like to replace it. Do you think the thermostat could have been damaged when I tried to change the water outlet connection? In addition, I have no idea where the thermostat is placed in the engine and if changing it it's an easy or difficult task.
I've looked for a solution on different sites - including Disco3.co.uk - but I've only found some information related with other models, which doesn’t work on mine.
Could anyone give me some information about that? Has anyone done this task before?
Thanks in advance for your help.
Regards,
Peter
PS Sorry if I've made some mistakes, but my English level is not as good as I would like.
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 18th Feb 2018 10:36 pm |
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NicoHarmsen
Member Since: 18 Jun 2020
Location: Red Creek
Posts: 4
 
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Hi Peter
I have the same problem with my 2.7 v6 Disco3 diesel . When going down a long hill the ( exterior temp 8.degC ) the temperature needle drops right down to the blue mark . I replace the thermostat at the bottom of the radiator (behind the radiator ). Easy job , took about 1 hour . Needed about 5 litres coolant to refill again .
However this did not fix the problem.
Anybody know what can be causing this ?
Cheers
Nico
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| 18th Jun 2020 1:20 pm |
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defector
Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1438
 
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There is a small coolant thermostat in each of the egr coolers where the coolant pipe enters.
But I think this was for the 2007 onwards model, not sure if previous models had these pipes linked to the main thermostat.
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| 18th Jun 2020 2:19 pm |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6278
 
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Check what reading the oil temp sensor is showing, it could be that, thats failing?.
Flack 
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| 18th Jun 2020 2:36 pm |
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Pere
Member Since: 18 Feb 2018
Location: Manresa
Posts: 9
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Hi there!
I had no answers since I wrote the post over 2 years ago. I solved the problem by myself. The solution was to purge the coolant system again, but this time following the LR instructions in the workshop manual step by step. If you need the detailed process, just tell me and I'll put it here.
Thanks to everyone for your replies.
Regards,
Pere
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| 18th Jun 2020 4:01 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10546
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funny. Was gonna say that! Remove the air!
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| 18th Jun 2020 6:30 pm |
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