335d operating temperature

danb21t · 11-12-2013, 01:02 AM

Ok so does anybody know the BMW spec for operating water temperature?

I h a ve just changed my egr thermostat and whilst temp goes up quicker now im not sure it is reaching target.

If anyone knows it will be handy in trying to determine if I need tackle the main 'stat

Cheers
Dan

tmarshall57 · 11-12-2013, 10:52 AM

Standard running temperature displayed by hidden menu is 90 - 93 degrees C. Standard opening temperature of main stat is 88 degrees

danb21t · 11-12-2013, 12:46 PM

Excellent thank you very much.

Looks like I need to do the main stat.

Annoying.

mob17 · 11-12-2013, 05:10 PM

Mine sits at 87/88C even after i replaced both stats and a coolant flush. So annoying.

danb21t · 11-13-2013, 02:07 AM

Interesting input.

I haven't seen mine hit 90 yet. High 80s in traffic but when on the motor way it sits in the 70s.

I haven't seen any particular change in fuel consumption either, still sitting around 500 per tank.

mob17 · 11-13-2013, 04:26 AM

Quote:

Originally Posted by danb21t

Interesting input.

I haven't seen mine hit 90 yet. High 80s in traffic but when on the motor way it sits in the 70s.

I haven't seen any particular change in fuel consumption either, still sitting around 500 per tank.

That's pretty good mileage for a tank! I get around 350-400. You must do a fair few motorway miles?

Woody80 · 11-13-2013, 07:19 AM

How do you check the temp? I know there are posts but even with searching I couldn't find it (no doubt my stupidity will be highlighted.....)

mob17 · 11-13-2013, 07:30 AM

Quote:

Originally Posted by Woody80

How do you check the temp? I know there are posts but even with searching I couldn't find it (no doubt my stupidity will be highlighted.....)

http://e90.wikifoundry.com/page/BC+hidden+menus

The coolant temp is menu 07.00. That link lists some other useful menus as well, such as battery voltage.

Woody80 · 11-13-2013, 03:58 PM

Quote:

Originally Posted by mob17

http://e90.wikifoundry.com/page/BC+hidden+menus

The coolant temp is menu 07.00. That link lists some other useful menus as well, such as battery voltage.

Thanks. Should get my car back tomorrow so I'll give it a go!

335DEE · 11-15-2013, 07:33 AM

Quote:

Originally Posted by danb21t

Interesting input.

I haven't seen mine hit 90 yet. High 80s in traffic but when on the motor way it sits in the 70s.

I haven't seen any particular change in fuel consumption either, still sitting around 500 per tank.

You probably won't see any difference in fuel economy . The only thing you will see in time is a little yellow light on the dash that says DPF is shagged.

DPF regens require a minimum set temperature ( not seen an actual figure as yet but certainly higher than 80c whilst running at +40 mph.[past experience]) . When they go to regen it causes the temp to go to circa 96C .. if you've never seen 94,95,96 whilst cruising ... then your DPF hasn't seen a regen. for the cost of having both the EGR and Main stat changed it's a no brainer.

acerboo · 11-15-2013, 09:46 AM

my previous one ran at 86 when the egr stat went it dropped to around 72 along with a loss of about 5mpg. the temp would sometimes rise to 90-100 on a steep hill and seemed in general pretty erratic.

Gra · 11-15-2013, 10:35 AM

Quote:

Originally Posted by mob17

That's pretty good mileage for a tank! I get around 350-400. You must do a fair few motorway miles?

You must do a lot of 'urban' driving, I do a mix of urban and motorway and my last tank got me to just under 550 miles (although I think I was running on fumes at that point!)

An average tank for me is anywhere between 470-520 miles.

marknjayne · 11-15-2013, 11:51 AM

average 85 degrees over a 20 mile journey

the right hand side smaller digits are

High value
Low value
Average value

Woody80 · 11-19-2013, 02:15 AM

Finally got round to checking my temp, only reached 78. I'd guess that's a problem then!

danb21t · 12-01-2013, 12:56 PM

Today I decided to change my main thermostat and to be honest is wasn't even that difficult.

I should really have done a how to/DIY guide but I wanted it done as soon as I could.

Took her for a spin afterwards and the temperature now sits at 92/93c which is awesome.

ag01 · 12-01-2013, 02:19 PM

Where do you guys buy them stats from? Are these on the carparts4less.co.uk any good? If yes which ones should I get - cheaper or more expensive ones?
Cheers!

Digitalize · 12-01-2013, 04:05 PM

I'd just get BMW ones.

The temp should never really drop below 88 once hot. Cold temperature and AC can make it seem like something's wrong but probably isn't as long as it does hit 88 and not drop much after.

danb21t · 12-01-2013, 04:42 PM

I replaced both thermostat, purchased from ECP and went for the more expensive. The EGR thermostat was made by the same company and just had BMW scratched off for licensing purposes. However the main stat was not an "OE" from the same manufacturer but will be fine all the same.

marknjayne · 12-02-2013, 03:20 AM

apparently BMW say between 77 and 92 is normal,77 seems a bit low to me but i averaged 84 on a 3 hr motorway run yesterday

mob17 · 12-02-2013, 03:42 AM

Quote:

Originally Posted by marknjayne

apparently BMW say between 77 and 92 is normal,77 seems a bit low to me but i averaged 84 on a 3 hr motorway run yesterday

BMW chat bullshit. Don't trust them. The main stat is rated much higher than 77c. 88c i think.

David c · 12-02-2013, 05:50 AM

Is the operating temperature constant or does it drop if you put your foot down, mine a 325d sits at about 86/87 then drops to 81 then goes back up?

Digitalize · 12-02-2013, 05:57 AM

There's a possible drop but the thermostats should shut at 88c, meaning there's no effective cooling happening. The heater is still drawing heat from the engine so it's worth doing the test with the AC off, temp set to 16 and fans off, as having the heating AC on could be dropping it a few degrees.

It's a lot easier to test in summer than winter.

11-12-2013, 01:02 AM	#1
danb21t Private First Class 5 Rep 172 Posts Drives: Le Mans 335d M Sport Join Date: Mar 2013 Location: Bucks iTrader: (0)	335d operating temperature Ok so does anybody know the BMW spec for operating water temperature? I h a ve just changed my egr thermostat and whilst temp goes up quicker now im not sure it is reaching target. If anyone knows it will be handy in trying to determine if I need tackle the main 'stat Cheers Dan
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11-12-2013, 10:52 AM	#2
tmarshall57 Captain 56 Rep 623 Posts Drives: F10 530d M Sport, E87 118d M Join Date: Apr 2008 Location: Bury, Lancs, UK iTrader: (0) Garage List 2009 BMW E87 118d M ... [0.00] 2012 BMW F10 530D M ... [0.00] 1997 K1100RS Specia ... [0.00]	Standard running temperature displayed by hidden menu is 90 - 93 degrees C. Standard opening temperature of main stat is 88 degrees __________________ F10 530d M Sport, September 2012 Individual Amazonite Silver, Oyster Dakota Leather, Auto, Nav Pro, Bluetooth + USB Devices, Expanded BMW Online, Comfort Seats, Sunroof, Sun Protection Glass Individual Satin Walnut Honey Brown Trim Interior Inside/Outside Mirror with folding and autodip, M Rear Spoiler
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11-12-2013, 12:46 PM	#3
danb21t Private First Class 5 Rep 172 Posts Drives: Le Mans 335d M Sport Join Date: Mar 2013 Location: Bucks iTrader: (0)	Excellent thank you very much. Looks like I need to do the main stat. Annoying.
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11-12-2013, 05:10 PM	#4
mob17 Major General 400 Rep 5,623 Posts Drives: E92 335D Join Date: Mar 2012 Location: East Midlands, UK iTrader: (5)	Mine sits at 87/88C even after i replaced both stats and a coolant flush. So annoying.
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11-13-2013, 02:07 AM	#5
danb21t Private First Class 5 Rep 172 Posts Drives: Le Mans 335d M Sport Join Date: Mar 2013 Location: Bucks iTrader: (0)	Interesting input. I haven't seen mine hit 90 yet. High 80s in traffic but when on the motor way it sits in the 70s. I haven't seen any particular change in fuel consumption either, still sitting around 500 per tank.
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11-13-2013, 07:19 AM	#7
Woody80 Second Lieutenant 23 Rep 298 Posts Drives: 335d Touring Join Date: Oct 2012 Location: Nottingham iTrader: (0)	How do you check the temp? I know there are posts but even with searching I couldn't find it (no doubt my stupidity will be highlighted.....) __________________
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11-15-2013, 09:46 AM	#11
acerboo Brigadier General 179 Rep 3,925 Posts Drives: e92 335d lci Join Date: Jul 2008 Location: kent iTrader: (2)	my previous one ran at 86 when the egr stat went it dropped to around 72 along with a loss of about 5mpg. the temp would sometimes rise to 90-100 on a steep hill and seemed in general pretty erratic.
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11-15-2013, 11:51 AM	#13
marknjayne Lieutenant 23 Rep 523 Posts Drives: 335d Join Date: Oct 2013 Location: worksop iTrader: (0)	average 85 degrees over a 20 mile journey the right hand side smaller digits are High value Low value Average value
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11-19-2013, 02:15 AM	#14
Woody80 Second Lieutenant 23 Rep 298 Posts Drives: 335d Touring Join Date: Oct 2012 Location: Nottingham iTrader: (0)	Finally got round to checking my temp, only reached 78. I'd guess that's a problem then!
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12-01-2013, 12:56 PM	#15
danb21t Private First Class 5 Rep 172 Posts Drives: Le Mans 335d M Sport Join Date: Mar 2013 Location: Bucks iTrader: (0)	Today I decided to change my main thermostat and to be honest is wasn't even that difficult. I should really have done a how to/DIY guide but I wanted it done as soon as I could. Took her for a spin afterwards and the temperature now sits at 92/93c which is awesome.
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12-01-2013, 02:19 PM	#16
ag01 New Member 0 Rep 8 Posts Drives: e92 335d Join Date: Aug 2013 Location: Cambs iTrader: (0)	Where do you guys buy them stats from? Are these on the carparts4less.co.uk any good? If yes which ones should I get - cheaper or more expensive ones? Cheers!
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12-01-2013, 04:05 PM	#17
Digitalize Photographer 409 Rep 2,643 Posts Drives: 320D Join Date: Jun 2013 Location: UK iTrader: (0)	I'd just get BMW ones. The temp should never really drop below 88 once hot. Cold temperature and AC can make it seem like something's wrong but probably isn't as long as it does hit 88 and not drop much after.
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12-01-2013, 04:42 PM	#18
danb21t Private First Class 5 Rep 172 Posts Drives: Le Mans 335d M Sport Join Date: Mar 2013 Location: Bucks iTrader: (0)	I replaced both thermostat, purchased from ECP and went for the more expensive. The EGR thermostat was made by the same company and just had BMW scratched off for licensing purposes. However the main stat was not an "OE" from the same manufacturer but will be fine all the same.
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12-02-2013, 03:20 AM	#19
marknjayne Lieutenant 23 Rep 523 Posts Drives: 335d Join Date: Oct 2013 Location: worksop iTrader: (0)	apparently BMW say between 77 and 92 is normal,77 seems a bit low to me but i averaged 84 on a 3 hr motorway run yesterday
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12-02-2013, 05:50 AM	#21
David c Private 5 Rep 81 Posts Drives: E92 325d M Sport Join Date: May 2013 Location: North East iTrader: (0)	Is the operating temperature constant or does it drop if you put your foot down, mine a 325d sits at about 86/87 then drops to 81 then goes back up?
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12-02-2013, 05:57 AM	#22
Digitalize Photographer 409 Rep 2,643 Posts Drives: 320D Join Date: Jun 2013 Location: UK iTrader: (0)	There's a possible drop but the thermostats should shut at 88c, meaning there's no effective cooling happening. The heater is still drawing heat from the engine so it's worth doing the test with the AC off, temp set to 16 and fans off, as having the heating AC on could be dropping it a few degrees. It's a lot easier to test in summer than winter.
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