[V8] Alternator/capacitor?

[remove NOSPAM]

You say condenser - I say capacitor. They are the same thing. If it is 
broke, just take it off. If you have no motor noise in the stereo and 
the car runs OK then no big deal. If you do hear whining in the stereo 
then keep in mind the ECU and all the other electronics will "hear" it 
too. They may not care but this sort of thing can cause all sorts of 
bizarre behavior with computer controlled systems. It is curious to me 
that Audi even put it there. All the major control units and the stereo 
have internal noise filtering. Either Audi saw a need for it or it is 
just a little over engineering. I have never seen this on another car, 
and in fact when I rebuilt my alternator the guy who tested it was 
surprised at how clean its output was. He called it "peppy" which I 
took as a complement from a guy who spends his day doing this sort of 
thing. This all would lead me to not worry about taking it off.

Dave


On Wednesday, June 30, 2004, at 09:02 PM, cobram at juno.com wrote:

> Sounds more like a condenser.  It's used as a noise suppressor, to keep
> the radio from whining to the rhythm of the RPMs.  If it's indeed the
> condenser, you really don't "need" it.  You can bypass till you have 
> time
> to pick one up at a FLAPS or stereo outlet.  If you want to get it from
> Audi,  it's PN: 441903291, and it's covered under service bulletin
> #A27-90-01.
>
> BCNU,
> http://www.geocities.com/cobramsri/
>
> Jason Wilkerson <wilke_jb at yahoo.com> writes:
>
>>    Alternator light came on tonight - found a capacitor in line
>> between
>> two wires that come off the back of the alternator - one wire had
>> corroded
>> off the terminal of the capacitor.  Question, does anyone else have
>> this
>> capacitor and is is needed?  I can't find anything on it in the
>> service manual?  Where do I get one quick?
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