E90 LCI 320d N47

EQUANT · 02-03-2014, 04:17 PM

Hi guys,

I own a 2010 320d N47 auto.
Lately there have been some low temps where i live and noticed that my engine temp doesn't get up to normal operating value anymore.

As far as i could remember, the past winters, even in less than -15*C, the temp would eventually go up to ~88*C. Now, at -14*C outside, the temp would not go above 70*C.

Today was a bit warmer, -2*C and basically the same behaviour: it goes up to 60*C quite fast, then slowly increases to 70*C, after which it stalls 70, +/- 4 degrees.

If i turn the cabin ventilation OFF the temp quickly rises by 10-15degrees, to about 85-86*C. These are all values for city driving. When driving outside the city, at ~60mph, the temp goes up to ~86*C by itself.

I tried heating the engine the most i could, after which i put my hand on the hose coming out of the thermostat and going into the radiator and it was cold. The radiator was cold as well, so i guess the main thermostat is not stuck on open.

Any ideas? Is this behaviour normal, or do i have a problem?

IanS100 · 02-03-2014, 06:09 PM

my 2010 320d manual is running at 87 - 88 in this cold weather & about 90 in warm weather, at 70 you could have problems with dpf regen

EQUANT · 02-04-2014, 01:41 AM

Are those temps for city, slow speed driving, or for motorway?

While driving home from work today i noticed the temp rose up to 86*C and the car started the regeneration. Engine temp went up to 93-94*C. Outside temp was -5*C, only slow city driving.
After the regeneration finished, i noticed the temp would be fully stable 88*C, just right.

I think i was worried for no reason

02-03-2014, 04:17 PM	#1
EQUANT First Lieutenant 30 Rep 317 Posts Drives: 320d Join Date: Dec 2009 Location: Bucharest iTrader: (0)	E90 LCI 320d N47 - engine temp Hi guys, I own a 2010 320d N47 auto. Lately there have been some low temps where i live and noticed that my engine temp doesn't get up to normal operating value anymore. As far as i could remember, the past winters, even in less than -15C, the temp would eventually go up to ~88C. Now, at -14C outside, the temp would not go above 70C. Today was a bit warmer, -2C and basically the same behaviour: it goes up to 60C quite fast, then slowly increases to 70C, after which it stalls 70, +/- 4 degrees. If i turn the cabin ventilation OFF the temp quickly rises by 10-15degrees, to about 85-86C. These are all values for city driving. When driving outside the city, at ~60mph, the temp goes up to ~86*C by itself. I tried heating the engine the most i could, after which i put my hand on the hose coming out of the thermostat and going into the radiator and it was cold. The radiator was cold as well, so i guess the main thermostat is not stuck on open. Any ideas? Is this behaviour normal, or do i have a problem? __________________ BMW 320 dA LCI, BMW PPK - 197HP, 2010, sapphire black, steptronic
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02-03-2014, 06:09 PM	#2
IanS100 Major General 135 Rep 5,050 Posts Drives: 520d F10 LCI M Sport Join Date: Nov 2011 Location: Southport UK iTrader: (0)	my 2010 320d manual is running at 87 - 88 in this cold weather & about 90 in warm weather, at 70 you could have problems with dpf regen
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02-04-2014, 01:41 AM	#3
EQUANT First Lieutenant 30 Rep 317 Posts Drives: 320d Join Date: Dec 2009 Location: Bucharest iTrader: (0)	Are those temps for city, slow speed driving, or for motorway? While driving home from work today i noticed the temp rose up to 86C and the car started the regeneration. Engine temp went up to 93-94C. Outside temp was -5C, only slow city driving. After the regeneration finished, i noticed the temp would be fully stable 88C, just right. I think i was worried for no reason __________________ BMW 320 dA LCI, BMW PPK - 197HP, 2010, sapphire black, steptronic Last edited by EQUANT; 02-04-2014 at 01:30 PM..
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