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2014 bmw 520d overcooling even with new thermostat

honda boi · 2024-08-23 15:02:58

Hi all Have a 2014 bmw f11 520d (N47 engine) that has me scratching my head. Not long after picking it up, it caught my eye that the oil temp gauge in the dash was increasing near middle point but then decreasing back to the 1/4 with no change in driving style. So hooked up the obd and saw the coolant was rising and…

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#52 22-09-2024 1:34pm

honda boi

Registered Users, Registered Users 2 Posts: 1,742 ✭✭✭

Join Date: July 2013

Posts: 1611

Ok so I have swapped out the oil level sensor.
Wiped the codes and codes are now gone and not coming back for that problem.
But it hasn't fixed the drop in coolant/oil temp unfortunately.
Got the passenger to record my dash with the readings on.
This was after driving this morning for 40mins(no issue, 100kmh road). Stopped for 30mins and driving in a town.
As you can see the oil temp drops 10°c for no reason and 5°c drop in coolant temp.
Doesn't seem normal to me but sure no idea what to do now so prob best to just get on with it and hope it isn't bad when temps drop.
https://youtube.com/shorts/96wAHH7xF0A?si=fjPcOcwbnmM0dXLr

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