E46 2003 325i Ventilation System Problem - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 01-30-2011, 10:11 AM
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E46 2003 325i Ventilation System Problem

Hello,
First off Id like to say that Im new and am not an experienced mechanic in any way, so please bear with me as I describe my problem. I would greatly appreciate any assistance that may lead to a solution.

I have a 325i 2003, The ventilation system has stopped working on my vehicle. When I turn on the fan (no AC) from the IHKA control panel the fan/motor sounds like it turns on and it is running, however no air at all comes out of the vents inside my car. I looked at other articles on internet and it sounded like my symptoms were very similiar to a faulty "BLOWER MOTOR RESISTOR". So I replaced that which was easy, however it did not fix the problem.

After replacing the "BLOWER MOTOR RESISTOR" I had the same symptoms,
1. turn the air on
2. I can hear the blower/fan, (not sure which one is which sorry) its the normal sound you hear when turning the fan control up.
3. No air comes out of my vents.
4. If I put my hand down by the control peddles (gas/break) I feel the air coming out, so its almost as if something is blocking it or?

Would anyone be able to give me some pointers on these symptoms? Again I appreciate any help that the great users of this forum could help me with.,

Thank You
Jason D.
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#2 (permalink) Old 02-04-2011, 01:44 PM
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any ideas? Ive tried all the basics, the scroll hot/cold button in middle of dash, replacing the resistor...its been dead for almost a month, and a summer florida is coming,

any guesses mechanically or electically as to why the motor/blower would be on and no air comes out?

Thanks
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#3 (permalink) Old 02-05-2011, 11:54 PM
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Hello,
Does the a/c contol unit light up as if working? Have you checked fuses? I have an e36 and had a problem with the control unit. In the e36 you can hear the vents openand close when switching from defrost to cabin/feet. I wonder if you are having the same prob. I have an e46 a/c control unit that i bought by mistake. I would be willing to sell it to you for $35.00 + shipping if you want to try it.
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#4 (permalink) Old 02-07-2011, 12:56 PM
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Yeah it lights up, when I increment the fan it sounds like it is increasing, when I decrement I hear the fan/blower get lower.

Is the blower motor and fan the same thing? This is the the strangest bug I have ever had with this e46,

So the control unit seems to be working, all control lights come on

Thanks
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