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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 02-09-2011, 08:43 AM
joh99077 joh99077 is offline
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Location: Utah
 
Join Date: Jan 2011
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Mein Auto: 323i
Unhappy Heater/AC Fan Going Out...Please Help

When I start my car and turn on my heater, I hear this whine for about a minute or two. It is pretty loud and makes my car sound like it is about to fall apart. When I turn the fan off, the sound goes away, so I figure it is the fan motor or some sort of bearing in there that is going bad. Is this an easy fix or do I need to rip the dash out to repair it? Has anyone else had this problem?

On a different note, sometimes I can smell something like hot coolant. I have looked at my oil and it doesn't appear cloudy and my car doesn't produce white smoke or anything. Could I just have a coolant leak somewhere and it is dripping on a hot component? I just bought the car and the previous owner had replaced the cooling system, so I would think there shouldn't be any leaks, but who knows. Any information would be helpful. Thanks,

2000 323i 5 speed
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  #2  
Old 02-09-2011, 12:15 PM
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ECSTuning ECSTuning is offline
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Chances are it is your blower motor...

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Old 02-09-2011, 07:01 PM
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marinekilz marinekilz is offline
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Mein Auto: 02 e46 325 xi
where do you smell coolant?? Inside the car or outside the car? I really don't know where the blower motor is, but I think it is behind the dash
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Old 02-11-2011, 08:12 AM
joh99077 joh99077 is offline
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Location: Utah
 
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Sometimes I can smell the coolant coming through the vents. This has me worried because I would hate for the heater core to go out. I really don't want to pull the dash apart. When I park in the garage, I can smell it pretty good while standing outside as well. I don't see any major leakage, but my dipstick drops about an inch every 8-10 days or so. It is very frustrating.
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Old 02-12-2011, 09:35 PM
copaz copaz is offline
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Location: Twin Cities, Minnesota
 
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Mein Auto: '04 325xi and '05 330xi
The blower motor is at the back of the engine compartment very close to the dash. Replacing it is an easy fix. 15 minutes.
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Old 02-13-2011, 08:38 AM
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marinekilz marinekilz is offline
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I would find the coolant leak before starting your heater fan problem
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Old 02-13-2011, 11:20 AM
copaz copaz is offline
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Quote:
Originally Posted by marinekilz View Post
I would find the coolant leak before starting your heater fan problem
Agreed
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Old 02-13-2011, 09:54 PM
joh99077 joh99077 is offline
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Where are the most common trouble spots within the cooling system?
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