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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 07-21-2015, 06:17 PM
WillBimmer WillBimmer is offline
E92 > F30
Location: Egypt
 
Join Date: Nov 2013
Posts: 10
Mein Auto: E92 335i 2010 + E46 330i
Unhappy Engine Fan Behavior

So, I just purchased a 330i 2005 Fully Loaded, and driving off for few minutes after an overnight I start hear the fan whining as I increase RPM, but its important to note that until the TEMP needle settles in the center, NO Whining is heard.

This means that the Clutch controlling the fan is working fine, and only after the Engine has reached the operating temp. it engages.

I don't hear my fan at all on my 2003 325i, as if the cooling system is robust and handling the heat transfer without needing the fan.

Is this behavior normal from the 330i?

I hate 5'ers E39s were you hear their fans while taking off, some retarded mechanics enforce full contact between the fan and its assembly, deleting the soft clutch engagement, and its stupid as stupid can ever get, the fan noise is louder than the 6 In-line cylinders.

Does my description make any sense to advanced bimmers among us?

Last edited by WillBimmer; 07-21-2015 at 06:20 PM.
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  #2  
Old 07-21-2015, 07:28 PM
cvx5832 cvx5832 is offline
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Location: Walnut Creek, CA
 
Join Date: Jan 2009
Posts: 682
Mein Auto: 325Ci, 325Cic, C300
I assume you're talking about the fan clutch if the whining is related to rpms. If so, it's engaging early, although it has been hot lately.

How old and how many miles on that fan clutch? If it's original I would replace it. Remember the clutch is also supposed to release at high rpm. If it no longer does then you run the risk of the fan flying apart and costing you much more than a viscous clutch.
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  #3  
Old 07-21-2015, 08:00 PM
Alika808 Alika808 is offline
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Location: Hawaii
 
Join Date: Feb 2013
Posts: 531
Mein Auto: 01 325 / 02 X5 / 03 525
Is it winning when rev the engine and forward? Lately, I got some fan clutch that it does like this.
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  #4  
Old 07-21-2015, 08:24 PM
computerwhiz1 computerwhiz1 is offline
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Location: Birmingham, Alabama
 
Join Date: Mar 2011
Posts: 190
Mein Auto: 2000 323i
Mine makes quite a bit of noise when its hot out and I've been idling in traffic or just driving slowly (less than 30MPH) in stop and go traffic. Sounds just like a dump truck or school bus, but it doesn't really bother me. As others have mentioned, the main thing to make sure of is that it is in fact engaging and disengaging as the engine temp changes in addition to disengaging at higher RPMs. I'm not sure where exactly it disengages in the RPM range, but mine seems to cut out somewhere between 3-4k.
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  #5  
Old 07-21-2015, 08:30 PM
Alika808 Alika808 is offline
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Location: Hawaii
 
Join Date: Feb 2013
Posts: 531
Mein Auto: 01 325 / 02 X5 / 03 525
[QUOTE=computerwhiz1 Sounds just like a dump truck or school bus, but it doesn't really bother me.

Yes, sounds like big truck and I enjoy it to rev harder when starting forward.
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  #6  
Old 07-28-2015, 10:21 AM
WillBimmer WillBimmer is offline
E92 > F30
Location: Egypt
 
Join Date: Nov 2013
Posts: 10
Mein Auto: E92 335i 2010 + E46 330i
Sorry for the late reply was on a vacation, and will certainly look into replacing the clutch with a new OEM one.

Thank you guys!
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