Member Since: 06 Feb 2019
Location: Hampshire
Posts: 965
Is this engine temperature normal?
Good afternoon all.
I've been driving my 2005 TDV6 D3 for a few years without concern about engine temperature, but a passenger the other day asked my why the engine appeared to be running cool.
As below, my needle never reaches horizontal, it has always consistently reached the below height. Is this height normal for a TDV6? All my other cars seem to have their temperature guages calibrated to show that 'normal' operating temperature is pretty much perfectly horizontal in the middle of the gauge.
The engine appears to run perfectly, recent service, new injectors, filters etc. Its always been like this since I got her.
2022 BMW i4 M50. Bought Oct 2022. 10,200 miles and counting...
2014 BMW 435d convertible. Bought July 2021. 58,000 miles and counting...
2005 Discovery 3 HSE Auto. Bought Feb 2019. 169,000 miles and counting...
2009 Freelander 2 XS Manual. Bought Sep 2013. SOLD Aug 2021 (already regretted!)
Member Since: 21 Sep 2007
Location: Liverpool
Posts: 1406
That's pretty much where has sat in the 15+ years I've run itI see no ships........
4th Dec 2022 4:47 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4446
Mine runs just about horizontal, but I'm sure they are not calibrated the same. A bit of variation is acceptable.Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
4th Dec 2022 4:59 pm
eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 780
Re: Is this engine temperature normal?
DIY Ace wrote:
Good afternoon all.
I've been driving my 2005 TDV6 D3 for a few years without concern about engine temperature, but a passenger the other day asked my why the engine appeared to be running cool.
As below, my needle never reaches horizontal, it has always consistently reached the below height. Is this height normal for a TDV6? All my other cars seem to have their temperature guages calibrated to show that 'normal' operating temperature is pretty much perfectly horizontal in the middle of the gauge.
The engine appears to run perfectly, recent service, new injectors, filters etc. Its always been like this since I got her.
in the eight or so years ive owned my d3 the needle has sat in the middle of the scale pointing at the arrow on the fuel gauge (obviously when fully warmed up)
could be any number of reasons that its reading lower and without knowing the full history of the vehicle it going to be a case of changing parts until you resolve it or leave it alone if your happy with the temp it reaches please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
4th Dec 2022 5:04 pm
grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6301
well better than closing to red zone inint?
4th Dec 2022 5:12 pm
DIY Ace
Member Since: 06 Feb 2019
Location: Hampshire
Posts: 965
Thanks all, already it seems like a mixed bag of opinions. I wonder if the Gap IID tool has a temperature readout on it, so that I can determine whether it is cool or whether it is the gauge that is poorly calibrated.
I'll report back once I've done that.2022 BMW i4 M50. Bought Oct 2022. 10,200 miles and counting...
2014 BMW 435d convertible. Bought July 2021. 58,000 miles and counting...
2005 Discovery 3 HSE Auto. Bought Feb 2019. 169,000 miles and counting...
2009 Freelander 2 XS Manual. Bought Sep 2013. SOLD Aug 2021 (already regretted!)
Member Since: 11 Aug 2017
Location: Helsinki
Posts: 6642
You should be able to read the engine temperature with the IID. You certainly can on the V8. This is just my opinion but unless the dial is really horizontal you’ve got a problem with the engine temperature… I speak of the V8 now, perhaps the diesel is different. The dial is also very insensitive, and it was designed by JLR to be such.
4th Dec 2022 7:06 pm
DIY Ace
Member Since: 06 Feb 2019
Location: Hampshire
Posts: 965
Thanks Kajtzu, I've put the car to bed now until next weekend, so I'll have a look at the Gap tool next Saturday.2022 BMW i4 M50. Bought Oct 2022. 10,200 miles and counting...
2014 BMW 435d convertible. Bought July 2021. 58,000 miles and counting...
2005 Discovery 3 HSE Auto. Bought Feb 2019. 169,000 miles and counting...
2009 Freelander 2 XS Manual. Bought Sep 2013. SOLD Aug 2021 (already regretted!)
Member Since: 20 Jul 2015
Location: Here
Posts: 575
IIRC there is/was a TSB relating to this, the resolution was to change the thermostat from a 91deg. C. to a 94deg. C.
Doesn't seem a lot but bear in mind the thermostat is at the bottom of the engine on hoses, not at the top of the engine where the temperature is measured.
4th Dec 2022 7:25 pm
DIY Ace
Member Since: 06 Feb 2019
Location: Hampshire
Posts: 965
I'd love to see that and would appreciate a copy if anyone here has got a copy saved...2022 BMW i4 M50. Bought Oct 2022. 10,200 miles and counting...
2014 BMW 435d convertible. Bought July 2021. 58,000 miles and counting...
2005 Discovery 3 HSE Auto. Bought Feb 2019. 169,000 miles and counting...
2009 Freelander 2 XS Manual. Bought Sep 2013. SOLD Aug 2021 (already regretted!)
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 181
I have a TDV6 D3 and when fully warm it's horizontal. However, at the moment it takes an age to get there and really only happens if I go on a decent enough motorway run. These cars take forever to warm up especially in these temps.
Doesn't seem like anything to be concerned about though...I imagine there's many other more significant faults just around the corner
5th Dec 2022 9:19 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8156
It shouldn't take more than 2-3 minutes driving to reach working temperature, suggests a faulty thermostat.It can when others can't,
It will when others won't,
It goes where others don't.
5th Dec 2022 10:49 am
Bracechenko
Member Since: 29 Jun 2021
Location: Cardiff
Posts: 181
I've driven 4 miles in busy traffic across town, 20 mins in total and my temp hasn't fully warmed up still... always like this in winter.
As I've said though, a motorway run would raise the temp and the needle would be horizontal
5th Dec 2022 6:34 pm
nigethecat
Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4186
I'd be more concerned about the faulty reading from the fuel gauge if you driven more than two miles and it's still saying full I want to see the sweets before I get into your windowless van... I'm not stupid!
Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone)
5th Dec 2022 7:35 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8156
Bracechenko wrote:
I've driven 4 miles in busy traffic across town, 20 mins in total and my temp hasn't fully warmed up still... always like this in winter.
As I've said though, a motorway run would raise the temp and the needle would be horizontal
Where does your needle sit when the engine is off?It can when others can't,
It will when others won't,
It goes where others don't.
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