Buzz in radio that varies in sound level

Tiny
GARYSIMPSON
  • MEMBER
  • 1992 DODGE DAKOTA
  • 3.9L
  • 6 CYL
  • 2WD
  • MANUAL
  • 232,000 MILES
Have a buzz in radio that varies in sound level is there suppose to be a ground on the gas tank. Also gray smoke on start up which varies on how much at different starts.
Wednesday, January 2nd, 2019 AT 7:19 AM

11 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Check the charging system voltage. make sure it is 14 to 14.5 volts. Then switch your scale to AC voltage and measure that as well.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

No, the fuel tank does not have a strap. all components on the tank have external grounds.

The smoke could be oil burning off from worn valve seals.

Roy
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Wednesday, January 2nd, 2019 AT 7:29 AM
Tiny
GARYSIMPSON
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  • 22 POSTS
Changed alternator radio buzz quit but started buzzing again.
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Wednesday, January 16th, 2019 AT 7:54 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Did you verify the voltage as I suggested before changing it?

Roy
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Wednesday, January 16th, 2019 AT 8:05 AM
Tiny
GARYSIMPSON
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  • 22 POSTS
Sorry still had a grd but ya'll are good.
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Wednesday, January 16th, 2019 AT 8:30 PM
Tiny
ASEMASTER6371
  • MECHANIC
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GRD?

Please explain.

Roy
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Thursday, January 17th, 2019 AT 2:51 AM
Tiny
GARYSIMPSON
  • MEMBER
  • 22 POSTS
Well kind of lost radio buzz. Alternator was bad replaced buzzing stopped for a day. Started buzzing again, disconnected negative hooked light between post and lead it light up pulled every fuse and reading 12 volts between battery negative post and lead confused. Thanks Roy.
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Thursday, January 17th, 2019 AT 3:56 PM
Tiny
ASEMASTER6371
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Okay, using a test light is not a way of checking for a draw. You need to check for current flow. that is what causes a drain, not voltage.

https://www.2carpros.com/articles/car-battery-dead-overnight

Roy
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Thursday, January 17th, 2019 AT 3:59 PM
Tiny
GARYSIMPSON
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Okay, how do I do that?
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Thursday, January 17th, 2019 AT 4:00 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It is in the guide I sent you.

You are looking for 50-75 milliamps. You need an amp meter to do this test.

Roy
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Thursday, January 17th, 2019 AT 4:02 PM
Tiny
GARYSIMPSON
  • MEMBER
  • 22 POSTS
Okay, I will let you know. Thanks
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Thursday, January 17th, 2019 AT 5:19 PM
Tiny
ASEMASTER6371
  • MECHANIC
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You are welcome.

Always glad to help.

Roy
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Thursday, January 17th, 2019 AT 5:31 PM

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