Idle temperature.

08-320d · 07-14-2020, 05:42 AM

Guys

Is it normal for the coolant temperature to reach 97°C when idle ? I've noticed this when I got an obd2 reader. When I put the A/C on it could drop down to 87°C. Car is a 320d. Thanks.

e90yyc · 07-14-2020, 10:22 AM

Normal.

Can't speak to specifics of your engine, but I can confirm those numbers are about right for an N52.

Fluctuations like what you experienced are normal as well. The thermostats are map-controlled, so the DME exercises some control opening and closing.

nsjames · 07-14-2020, 11:08 AM

if it's not giving you the overheat symbol on the dash don't worry about it.

bmw deleted the temperature gauge from the cluster, and that's because it changes depending on engine load and most people would have freaked out about it.

08-320d · 07-14-2020, 12:54 PM

Cheers guys

It probably is normal and I'm just used to the older gauges of my previous cars which would always sit at 90.

hassmaschine · 07-15-2020, 03:32 PM

E90s can run from 80-112c. 97c isn't anything to worry about.

07-14-2020, 05:42 AM	#1
08-320d New Member 6 Rep 28 Posts Drives: 320d e90 Join Date: Jun 2020 Location: Ireland iTrader: (0)	Idle temperature. Guys Is it normal for the coolant temperature to reach 97°C when idle ? I've noticed this when I got an obd2 reader. When I put the A/C on it could drop down to 87°C. Car is a 320d. Thanks.
	Appreciate 0 Tweet Quote

07-14-2020, 10:22 AM	#2
e90yyc Art Collector 2424 Rep 3,449 Posts Drives: 2007 328xi (GM-delete 6MT) Join Date: Feb 2018 Location: Canada iTrader: (0)	Normal. Can't speak to specifics of your engine, but I can confirm those numbers are about right for an N52. Fluctuations like what you experienced are normal as well. The thermostats are map-controlled, so the DME exercises some control opening and closing. __________________ When I'm dead, just throw me in the trash.
	Appreciate 0 Quote

07-14-2020, 11:08 AM	#3
nsjames Brigadier General 2440 Rep 4,331 Posts Drives: 08 328xi Touring Join Date: May 2017 Location: ohio iTrader: (0)	if it's not giving you the overheat symbol on the dash don't worry about it. bmw deleted the temperature gauge from the cluster, and that's because it changes depending on engine load and most people would have freaked out about it.
	Appreciate 0 Quote

07-14-2020, 12:54 PM	#4
08-320d New Member 6 Rep 28 Posts Drives: 320d e90 Join Date: Jun 2020 Location: Ireland iTrader: (0)	Cheers guys It probably is normal and I'm just used to the older gauges of my previous cars which would always sit at 90.
	Appreciate 0 Quote

07-15-2020, 03:32 PM	#5
hassmaschine Major General 3966 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	E90s can run from 80-112c. 97c isn't anything to worry about.
	Appreciate 0 Quote