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Radio noise

Forum: C3 Electrical, Body and Interior

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Radio noise

Posted: 7/11/14 10:16pmMessage 1 of 6
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Hillsboro, TX - USA
Joined: 3/2/2008
Posts: 148
Vette(s): 1981 beige/bronze
I don't listen to the radio much, but I turned it on today and there is a lot of motor noise. Sounds great as long as the motor is off. Start the car and I cannot understand a word. I tried a CD and same noise. Is there something I missed when I put new motor in.

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Re: Radio noise

Posted: 7/12/14 7:30amMessage 2 of 6
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Frederick, MD - USA
Joined: 9/8/2003
Posts: 3398
Vette(s): 1969 convertible L71 427/435 4-speed black interior
Is the noise constant or does it rise and lower with engine rpm's?  If it's constant, it's ignition interference...if it rises and lowers then it's alternator noise.  

Did you replace the shielding around your distributor, coil and plug wires?  If not, do so.  If it's alternator noise a filter on that can solve the problem.  

Poor grounds on the radio and speakers can add to the problem as well.
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Re: Radio noise

Posted: 7/12/14 10:26amMessage 3 of 6
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Hillsboro, TX - USA
Joined: 3/2/2008
Posts: 148
Vette(s): 1981 beige/bronze

it is constant no whining noises. Sounds like it would if the station was fading in and out very fast.



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Re: Radio noise

Posted: 8/16/14 9:04pmMessage 4 of 6
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CANTON, MI - USA
Joined: 10/13/2013
Posts: 21
Vette(s): `82 Shark

Btw, that is just a good looking, seldom seen color combo on your car.


Dave


Lakeside 49

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Re: Radio noise

Posted: 8/22/14 1:12pmMessage 5 of 6
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Lancaster, PA - USA
Joined: 8/24/2008
Posts: 25
Vette(s): 1970 Green Convertible

Check you antenna connections. However, I believe you radio is dying.

Jan
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Re: Radio noise

Posted: 9/5/14 8:53amMessage 6 of 6
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COLUMBUS, NC - USA
Joined: 8/19/2012
Posts: 42
Vette(s): 2011 Grand Sport Coupe, 6-speed 1977 Coupe L82, 4-speed
That sounds a lot like you have a bad antenna or antenna wire.  Check the connections ( not easy, I know), but I'd bet that the problem is in the antenna system.
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