Radio noise please help! - Chevelle Tech
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post #1 of 7 (permalink) Old Sep 10th, 15, 12:16 PM Thread Starter
Matt
 
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Radio noise please help!

Hey I installed a retrosound deck in my 66. And it works great until the car is running. But it acts like it skips almost? It doesn't change with rpm, I've tried different ground locations. In hooked my afr gauge, changed power locations. Nothing seems to change. Any help would be incredibly great!
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post #2 of 7 (permalink) Old Sep 10th, 15, 1:03 PM
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Re: Radio noise please help!

Sounds like you need to try a different radio.

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post #3 of 7 (permalink) Old Sep 10th, 15, 2:26 PM
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Re: Radio noise please help!

Quote:
Originally Posted by apexrig1 View Post
Hey I installed a retrosound deck in my 66. And it works great until the car is running. But it acts like it skips almost? It doesn't change with rpm, I've tried different ground locations. In hooked my afr gauge, changed power locations. Nothing seems to change. Any help would be incredibly great!
Do you have any ground straps installed, valve covers to chassis etc.?

65 Chevelle 2Dr. Post,Global West stage 3, Small Block, Small Journal 337cid. Howards roller cam .570/.570" lift 227/233 duration @ .050 LS112, Speed Pro forged pistons 10 to 1, Trick Flow 195,23 degree heads, Holly 750 Ultra, Edelbrock Performer RPM air gap.

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post #4 of 7 (permalink) Old Sep 10th, 15, 2:48 PM
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Re: Radio noise please help!

When the car is not running the voltage may be right but then once it is running and the alternator is putting out, maybe the voltage is now too high. The high voltage might not always be present so hook up a meter with a peak hold feature to catch the spike if there is one. I had this happen on a customer's car and the display never went off or changed but the audio would cut out. Once he replaced the alternators voltage regulator, all was good.

Jim

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post #5 of 7 (permalink) Old Sep 10th, 15, 5:10 PM Thread Starter
Matt
 
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I actually disconnected the alternator and ran the car and it still did it
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post #6 of 7 (permalink) Old Sep 10th, 15, 7:33 PM
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Re: Radio noise please help!

Maybe try getting it down to the basic connections with it not mounted in the dash and the antenna disconnected. Basically just your power and ground connections and the radio chassis not touching anything like metal on the car.

If it still does it, try it on a different vehicle. If it does it on another vehicle, then the radio is suspect.

Could the radio be close to something that is being picked up through the air and inducing the noise into it ?.

Is there maybe some aftermarket piece in the car that is inducing a noise on the power or ground side of the car ?.

Possibly does the radio have a poor design to where it needs power line filtering ?.

Jim

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post #7 of 7 (permalink) Old Sep 10th, 15, 8:57 PM
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Re: Radio noise please help!

While I don't know the specifics of your issue,

It may be worthwhile to read both pages of this thread:

https://www.chevelles.com/forums/showthread.php?t=356986

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