[V8] Alternator/capacitor?

[BBlake1055 at aol.com]

I listen to AM talk radio most of the time and I am 25 miles out from the city and I get a constent static noise on AM radio.  It's very strange, both my 90' & 91' will have a considerable amount of static and if I flip the defroster switch on and off the noise will cut in half.  The 92' has the external antenna and AM reception is about normal with very little static.

Also I noticed there was a blue in-line adapter or noise supressor on the 90'on the antenna wire right behind the radio.  It doesn't seem to make any difference with in plugged in or if I take it out.

I'm going to try to put a rear external antenna on the 91' to see if it makes a difference. 

Has anyone experienced the defroster switch on/off trick???


In a message dated 7/6/2004 9:19:15 PM Eastern Daylight Time, cobram at juno.com writes:

> <dsaadNOSPAM at icehouse.net> writes:
>
>> 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. 
>
>> 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
>
>
>I've seen them used on numerous vehicles, all the way back to the late
>50's.
>
>The condenser was added to the V8Q in response to owner complaints of rpm
>whine.  It did not come from the factory until I believe the 1991 model
>year.  It might have something to do with the antennas being built into
>the windscreens being more susceptible to interference.  When the Bose is
>in "safe" mode and cranked a bit, you can use it as an auditory tach
>gauge in V8Q #1,  V8Q #2 with the external antenna does the same thing. 
>Both have the condenser.  
>
>I never listen to AM, but I'll check, I suspect that's where the
>interference must be most noticeable.
>
>BCNU,
>http://www.geocities.com/cobramsri/
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