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Unread 12-10-2015, 09:00 AM   #1
Candymancan
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1998 ZJ 
 
Join Date: Aug 2010
Location: Virginia
Posts: 4,556
Buzzing speaker is driving me nuts !!!

Uhg the rear speaker in the trunk on the ceiling on my 5.9 has been buzzing for over a year and its driving me nuts.. Im not good at tracking down electrical problems so i dont know where to start.. It goes away sometimes when i hit the electric locks.. and always goes away if i turn the volume really high for a split second..

I cant explain that...

When it buzzes i hear my alternator in the speaker. I figured it was a bad alternator, and mine did go bad not to long ago but i have a brand new one and it still does it..

Can anyone help me its driving me crazy, and im considering just unplugging the sucker... Its only that speaker too..

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1998 5.9 V8 ZJ 180k miles
1998 4.0 I6 Laredo ZJ 227k miles
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Unread 12-10-2015, 09:02 AM   #2
Xpress
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1996 ZJ 
 
Join Date: Dec 2010
Location: The Great Big Box, California
Posts: 5,891
Sounds like that speaker may be grounding out somewhere, or the plugs on the back are shorting. Simplest thing you can do is unplug the speaker and the noise will go away entirely..
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Unread 12-10-2015, 09:35 AM   #3
jb1331
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Join Date: Sep 2014
Location: Grapevine, Texas
Posts: 178
Quote:
Originally Posted by Xpress View Post
Sounds like that speaker may be grounding out somewhere, or the plugs on the back are shorting. Simplest thing you can do is unplug the speaker and the noise will go away entirely..
No.. it is not the speaker..if it was grounding out, you would get very little (if any) sound from the speaker.

I get a similiar issue with my after market stereo and stock infinity amp. Sometimes I get a constant electrical noise that comes on with the headlights, but it is not alternator whine that varies with RPM..I have not had it for a couple of months now, but it will return again whenever it feels like it.

I have a filter to put on the 12v main going into the stereo, but I have not been motivated since the noise is not currently present.
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Unread 12-10-2015, 10:28 AM   #4
PolkaPower
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1998 ZJ 
 
Join Date: Aug 2011
Location: The Abyss, Italy
Posts: 18,849
Quote:
Originally Posted by Xpress View Post
Sounds like that speaker may be grounding out somewhere, or the plugs on the back are shorting. Simplest thing you can do is unplug the speaker and the noise will go away entirely..
Yeah, bad ground.
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