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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 08-24-2013, 04:20 PM
siouxfox siouxfox is offline
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N52 fan running all time

Hey guys, I need a little help on the Matter. I have a BMW 330i N52B30 2012 Euro spec, and since I bought it , the radiator fan is on, and the car gets heated up a lot, not to the point of overheating but quite hot. I took it to the dealer and they told me on the E90 the N52 always is running. A friend of mine has a N53B30 and it never gets running. What can a I do?
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  #2  
Old 08-24-2013, 06:57 PM
ctuna ctuna is offline
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Read the Codes first.

Read the Codes first.
You need a code reader capable of reading BMW error and shadow codes.
If the heat is in the danger zone you should get a yellow then red overheat warning.

You could get an elm bluetooth module and monitor the actual coolent temperature
in real time. There is an app called Torque you can use to monitor the data that is
available on the OBD connector is also reads resets error code but not all BMW error
codes.

I suppose you have checked the coolant levels and checked that your radiator is clean.
It could be the water pump is getting ready to go out on you.

Last edited by ctuna; 08-24-2013 at 06:58 PM.
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  #3  
Old 08-26-2013, 08:04 AM
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cwinter cwinter is offline
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Are you saying your radiator fan is constantly running?

If it is hot outside and you drive at low speeds (such as stuck in traffic or through city traffic) that may not be completely unusual. I assume the Euro Spec 330i has the oil temperature gauge? What temperatures are you seeing?
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Old 08-26-2013, 08:46 AM
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tturedraider tturedraider is offline
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Quote:
Originally Posted by siouxfox View Post
Hey guys, I need a little help on the Matter. I have a BMW 330i N52B30 2012 Euro spec, and since I bought it , the radiator fan is on, and the car gets heated up a lot, not to the point of overheating but quite hot. I took it to the dealer and they told me on the E90 the N52 always is running. A friend of mine has a N53B30 and it never gets running. What can a I do?
That is a lie. I have 2006 E90 330i N52B30 and I have had about four instances over the past twelve months of the fan randomly running at very high speed. It has not necessarily been associated with high ambient temperatures. Each time I have pulled over and turned off the motor for just a few minutes and the condition has cleared. This is definitely out of the ordinary behavior. I have yet to determine the cause.
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Old 08-26-2013, 09:32 AM
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cwinter cwinter is offline
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Quote:
Originally Posted by tturedraider View Post
That is a lie. I have 2006 E90 330i N52B30 and I have had about four instances over the past twelve months of the fan randomly running at very high speed. It has not necessarily been associated with high ambient temperatures. Each time I have pulled over and turned off the motor for just a few minutes and the condition has cleared. This is definitely out of the ordinary behavior. I have yet to determine the cause.
Sounds like a bad sensor then that causes the car to instruct the fan to run...or does your car indicate a high heat condition as the OPs? Can't recall if the US 330s had the temperature gauge or not...
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  #6  
Old 08-26-2013, 09:38 AM
hondo402000 hondo402000 is online now
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try turning the AC off when you are sitting still and see if the fan stops running or slows down

when my AC is on in the driveway, and I am not moving the Fan sounds like a jet taking off
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Old 08-26-2013, 11:19 AM
pspressart pspressart is offline
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Since your location is Bogota, which is about 8,000 feet (2,400 meters) above sea level, that may have an effect on how much the fan runs - lower air pressure = lower heat transfer ability.
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Old 08-27-2013, 09:26 AM
siouxfox siouxfox is offline
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The car does not show any warning on the instrument pannel. The car does not run too long when the air fan is running. And the engine heats up a lot my n55 does not have any of these problems i am gussing it has to do with the alloy the n52 is made and the n55 isn't . But running the same distance under the same conditions the N52 heats up a lot and unlike the n55 it doesn't have any temp gauge.
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  #9  
Old 08-27-2013, 09:45 AM
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Vanos4:12PM Vanos4:12PM is offline
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How did you get a Euro spec car in imported into the US?
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  #10  
Old 08-27-2013, 10:48 AM
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Mark K Mark K is offline
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Quote:
Originally Posted by siouxfox View Post
But running the same distance under the same conditions the N52 heats up a lot and unlike the n55 it doesn't have any temp gauge.
OK, without temp gauge it will be impossible to guess if it is necessary or it is doing it wrong. I had my N55 engage the fan at max speed totally unnecessary and, in less than 10 km, my oil temperature DROPPED to less than 100 Celsius. This happened only once, so I'm not making a big deal out of it. As tturedraider said, I just turned the car off and back on in less than 5 minutes and all was fine.

Again, without temperature or codes, it is anybody's guess if this is normal or not. Unless you find another 330i Euro Spec in Bogota' to test and see what happens.
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  #11  
Old 08-27-2013, 10:59 AM
pspressart pspressart is offline
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Quote:
Originally Posted by Vanos4:12PM View Post
How did you get a Euro spec car in imported into the US?
His location says Bogota, Colombia, not the US.
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  #12  
Old 06-15-2014, 04:23 PM
Mark.g28 Mark.g28 is offline
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My E90 does the same thing, fan is on at low speed at idle. I dont think it changes speed when im driving fast though. Its fair 70 degrees here in san diego and the engine does feel like its hotter than usual. Should i be concerned?
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