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3.0d temp gauge

Posted: Sat Nov 21, 2015 6:25 pm
by mattyp
My temp gauge reed just under the quarter mark on the gauge. Is this normal for a 3.0d?

Re: 3.0d temp gauge

Posted: Sat Nov 21, 2015 6:33 pm
by X5Sport
No.  Thermostat is stuck open.

Re: 3.0d temp gauge

Posted: Sat Nov 21, 2015 6:42 pm
by mattyp
thanks is this a common fault with them?

Re: 3.0d temp gauge

Posted: Sat Nov 21, 2015 6:57 pm
by Entwicklung34
Got this on mine, but moves between 1/4 mark and just under 1/2 mark depending on conditions... Think mine needs changin too. (Normal is 1/2 way mark once up to optimum temp on any car i've ever owned)

Re: 3.0d temp gauge

Posted: Sat Nov 21, 2015 7:19 pm
by X5Sport
Very common as the cars age.  Might be guidance about changing them on the forum.

Re: 3.0d temp gauge

Posted: Sun Nov 22, 2015 6:27 pm
by andym3
When the weather is as cold as it is my temp gauge sits just over the 1/4, in summer closer to 1/2!
If I had a problem with my thermostat wouldn't the heater not work?  :-[

Re: 3.0d temp gauge

Posted: Sun Nov 22, 2015 6:34 pm
by Horizon
Sounds like the thermostat to me, it should reach and stay at the 1/2 way mark whatever the weather after a good run, may take longer to warm up though.

Re: 3.0d temp gauge

Posted: Sun Nov 22, 2015 6:43 pm
by andym3
I have no issues and the heater is warm after about 5mins of driving!

Re: 3.0d temp gauge

Posted: Sun Nov 22, 2015 7:18 pm
by X5Sport
Different pumped and controlled circuits and the heater air runs at a lower temperature - well below coolant temp.  The idea of the stat is that the temp gauge doesn't move regardless of the air temp - whether hot or cold.  My E53 stayed centred all the time frosty or baking.

Re: 3.0d temp gauge

Posted: Sun Nov 22, 2015 7:51 pm
by Horizon
[quote="andym3"]
When the weather is as cold as it is my temp gauge sits just over the 1/4, in summer closer to 1/2!
If I had a problem with my thermostat wouldn't the heater not work?  :-[
[/quote]
Look up hidden menu, this can give you the coolant temperature . The BMW gauge will stay central usually between 95 - 110 degrees, the hidden menu will give you accurate coolant temperature.
I think guessing from my poor memory thermostats tend to hold 95 / 97 degrees.
I suspected mine on the 3 er was stuck open, but it's just taking a lot longer to get up there but always settles at 97 degs C

Re: 3.0d temp gauge

Posted: Tue Nov 24, 2015 8:42 pm
by mattyp
I have ordered a new thermostat, going to fit it at the weekend. What is the best way yo bleed the system ?

Re: 3.0d temp gauge

Posted: Wed Nov 25, 2015 10:20 pm
by Entwicklung34
Are you planning on changing out the water pump or coolant while you're there mate?

I think i'm going to need to do mine at some point too, so let us know how things go...

Re: 3.0d temp gauge

Posted: Thu Nov 26, 2015 7:20 pm
by mattyp
Just the stat and coolant

Re: 3.0d temp gauge

Posted: Sat Nov 28, 2015 7:20 am
by mattyp
Changed the stat and put new coolant in, it's a bit tight for space changing it. Now the gauge sits at halfway now  :)

Re: 3.0d temp gauge

Posted: Sat Nov 28, 2015 8:11 am
by mikem
Matty, can you tell us what the OBC hidden reading is with a new stat ?