Buzzing coming through the speakers - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 8 (permalink) Old 06-07-2017, 07:56 AM Thread Starter
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Buzzing coming through the speakers

Help ot there.
My radio was working fine then it started buzzing as I rev the engen and when it is stopped but with the ingition on the fule pump also transmits a buzz, so when I disconect the fule pump hot lead from the sending fule pump it stops. I know it is a simple fix, any ideas?
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post #2 of 8 (permalink) Old 06-07-2017, 08:09 AM
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Usually a Ground loose or missing from the radio..

rob

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post #3 of 8 (permalink) Old 06-08-2017, 05:01 AM Thread Starter
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Thank you, I tried that and still get the noise.
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post #4 of 8 (permalink) Old 06-08-2017, 05:55 AM
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Here are some things you can try:

On the power AND ground leads, place one of these ferrite clip-on beads: https://www.amazon.com/stardrift-10-...=ferrite+beads

Along with the beads, ACROSS the power to ground, install a 1mF or smaller capacitor (small mF or even uF = catches the noise) - which can be found at hobbiest sites/stores (like Microcenter).

Make sure your antenna lead is intact and not in contact/running next to other power wires.

My guess is that your radio's power supply has developed some issues with it's power filtering...

50 years from now - how are we going to restore a "classic" microprocessor based modern car?? Alfas - 1980 Spider, 1987 Milano, 1976 Spider
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post #5 of 8 (permalink) Old 06-29-2017, 08:25 PM
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I just ran into this and it turned out to be a poor ground on my antenna. The ground on the radio was good but I still had a click/hum. Once I realized it only happened with the FM radio on, I made sure the antenna leads were connected properly and it all went away. Not sure if that is your problem, but maybe this helps.
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post #6 of 8 (permalink) Old 08-05-2017, 08:27 PM
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Quote:
Originally Posted by alfarri View Post
Thank you, I tried that and still get the noise.
where you able to get this fixed?

1992 Alfa Romeo Spider Veloce, 2017 Alfa Romeo Giulia, 2018 Volkswagen Tiguan SEL Premium
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post #7 of 8 (permalink) Old 08-06-2017, 08:47 AM Thread Starter
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So when I began searching for disconnected ground wires I came onto the left and right window regulator motor wiring of which I saw a problem so I started tearing out my window regulators to replace them with new ones and when I'm done I'm sure that that buzzing if it's still there will be easier to source
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post #8 of 8 (permalink) Old 08-17-2017, 03:15 PM
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As strange as it may seem, radio buzzing can also be a symptom of a failing/failed voltage regulator. Watch the voltage gauge (if your car had one) when the buzzing is present. If the buzzing starts when the voltage drops below 12V, try replacing the regulator (internal in some Alfa alternators).

Edward
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