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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > 320d High Coolant Temp



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      11-21-2012, 10:23 AM   #1
CarAbuser
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320d High Coolant Temp

Just recently decided to check my coolant temp using the BC hidden menus.

It heated up in good time then just sat at 97deg~ for the rest of the journey.
Searching through other threads I noticed that people are saying it should be at 90deg.

I'm going to check again when I get time just to confirm it.

Low temps seem to be a common complaint but I've not seen any threads about high temps, what are the possible causes?
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      11-21-2012, 10:38 AM   #2
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I'd say that was about spot on.
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      11-22-2012, 06:41 AM   #3
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Likely just running on the high side of average. Bound to be some examples with components with the + side of tolerance.

BTW, is your car the later N47 engine? That has one thermostat and does tend to be more stable anyway.

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      11-22-2012, 07:20 AM   #4
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Thanks for the input.

I will check again tomorrow to verify. I think I heard somewhere that the DPF regen cycle has an effect on temperatures so it could be that.

I was worried that it could indicate improper oil or an issue with the coolant.
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      12-27-2012, 06:40 PM   #5
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So tell me again. How do I access these hidden menus. Want to check my temps.
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      12-28-2012, 07:44 AM   #6
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It's not the easiest menu to get to.

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

Good luck!
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      12-29-2012, 05:54 AM   #7
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My N47 320d's temp is stable @ 88*C with AC on (front vent running).
Highest i've seen was 98*C, in summer time, car stopped, AC off; when temp hit 98*C front fan started running until temp decreased to 95*C, then it stopped and the whole cycle repeated.
If i turned AC on or the car was moving, the temp went back to ~88*C
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