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Car Forum / BMW Cars / March 2007

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Honking sound

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dizzy - 30 Mar 2007 01:11 GMT
I've recently noticed, perhaps because my windows are open in the
Springtime air, that my 2000 323i makes a little honking noise upon
acceleration.  The only time it's noticeable when driving is when I
first take off from a stop.  honk.  

I also noticed a little honk when I stated it, and a little honk when
I shut it down, as the RPM's dropped from idle to zero.

It's running fine, as far as I can tell...
Brian Lam - 30 Mar 2007 11:07 GMT
Probably cracked cyclone filter (Crankcase ventilation/oil seperating valve
or something? See:
http://www.realoem.com/bmw/showparts.do?model=AM32&mospid=47638&btnr=11_2194
&hg=11&fg=15), the pipes connected to the filter may need to be changed as
well.  Parts cheap, but it's quite a tedious job (3-4 hours labour).

Brian

On 3/30/07 1:11 AM, in article r5lo039asd595j11uso8fsos5ic15iiihb@4ax.com,

> I've recently noticed, perhaps because my windows are open in the
> Springtime air, that my 2000 323i makes a little honking noise upon
[quoted text clipped - 5 lines]
>
> It's running fine, as far as I can tell...

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