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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Carbon build up



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      01-07-2017, 05:35 PM   #23
die$el<3
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So after a freeway drive I drive in the city for 15 minutes and my engine temp got to 96-98 Celsius. Does this mean my car is in a regen ? Or is that too high ?
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      01-07-2017, 05:54 PM   #24
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Originally Posted by die$el<3 View Post
So after a freeway drive I drive in the city for 15 minutes and my engine temp got to 96-98 Celsius. Does this mean my car is in a regen ? Or is that too high ?
Sounds like your cooling fan may not be working. Mine stopped turning on when I turned on the AC, so my AC only blew cold when I was moving and pulling air through the radiator. I'd say before you go replacing the fan, replace the control module. It's significantly cheaper than the fan, and fixed my issue.
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      01-07-2017, 09:13 PM   #25
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So after a freeway drive I drive in the city for 15 minutes and my engine temp got to 96-98 Celsius. Does this mean my car is in a regen ? Or is that too high ?
What was ambient and how did you drive, hard, easy?
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      01-07-2017, 09:29 PM   #26
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What was ambient and how did you drive, hard, easy?
It was 65 f and I was not driving hard at all. It was stop and go In the city
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      01-07-2017, 10:39 PM   #27
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Cooling fan comes around 98C. At 65F ambient it in not impossible for your coolant to get up to 96-98C. I recall trying to find out when the fan comes on and idling for 10-15 min did the trick. I would just monitor the temps for now.
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