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      08-12-2011, 12:12 AM   #23
UnknownSpiritX5
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Hmm...so now i'm a bit confused again. 50% say its normal, while the other 50% has thermostat issues. I guess I should just have it checked out at the dealer just in case.
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      09-17-2011, 04:49 PM   #24
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was it in fact the thermostat?

any feedback on this?

thanks.
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      09-17-2011, 05:19 PM   #25
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Usually after a nice hard run, one the internal fan and radio is off, you can hear the fan still running under the hood! I just give it a few minutes to cool down, and it's shuts off.
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      09-07-2012, 02:53 PM   #26
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Old but useful post. Not sure if you call it a whine. To me it sounded like a mini jet turbine. Also, I just had dealer recharge refrigerant noticed it was very loud afterward. Guess I assume AC runs louder when it's fully charged. I could hear it in the cabin and then when I got out with the engine on it was very loud.

Another thing I noticed when I start it up and AC on max fan is turned on a few seconds later, the RPMs shoot up significantly for about 10-15 seconds then drops (but noise is still loud and noticable). Once I turn off AC, it's "quiet" againl.
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      09-11-2012, 12:00 AM   #27
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I also had loud fan noise problem until BMW replaced my thermostat (part # 11537549476). My car no longer sound like a 747 taking off the run way.

I used the INPA software to discover the faulty thermostat code. I don't think it's something BMW will actively notify or replace for you if don't tell them about it. I had complaint about it before checking w/ INPA and they told me the noise is normal.
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      10-30-2014, 02:29 PM   #28
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Loud noise !!!

So I was driving home and got to a stop sign and heard a strange noise what kinda sounded like what a bad belt I guess would sound like, got quit as I came to a stop and loud when I hit the gas, I did have an injen intake put on not too long ago, should it be the cause, and one point when I pulled in the drive way and in park, the car felt as though it was going to stall a little shaky. for some reason I keep going back to it over heating because I had a car before with problems of over heating and then a blown head gasket. So I'm really cautious of my bmw, will the car tell me it's over heating or if the fan is not coming on, since I do not see a temp gage in my cluster..
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      10-30-2014, 02:30 PM   #29
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Sorry this was my first post so I'm sorry if there are other threads idk how to do this sh$t
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