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Stuckntx · 10-13-2019, 10:05 PM

Alright so my burb has developed a whine through the speakers. Im pretty sure its the alternator but what has me questioning my diagnosis is that its intermittent and it usually goes away after about 10 minutes of driving or so.
Anyone have any similar issues and did you fix it? Will a noise reducer on the alt to bat wire help?

stjames151 · 10-13-2019, 10:10 PM

In my experience, that’s caused by a ground short near the head unit.

east_beast · 10-13-2019, 10:11 PM

Before you do anything else, check and make sure your ground is secure.

bdkw1 · 10-13-2019, 10:20 PM

Check all your grounds. Motor to chassis and body to chassis.

Aggie06 · 10-13-2019, 10:23 PM

Aftermarket head unit? My 2010 did that. I found a slightly loose ground causing it. Drove me nuts for months until I found it.

Sent from my iPhone using Tapatalk

smurfblue40 · 10-13-2019, 10:25 PM

Quote:

Originally Posted by bdkw1

Check all your grounds. Motor to chassis and body to chassis.

This

takotruckin · 10-13-2019, 11:47 PM

If the alternator is charging properly and just making some noise then I would just turn the radio up and ignore it.

smurfblue40 · 10-13-2019, 11:52 PM

Quote:

Originally Posted by takotruckin

If the alternator is charging properly and just making some noise then I would just turn the radio up and ignore it.

Turn it up to 11

ArTi54N · 10-14-2019, 12:02 AM

did you install it yourself? do you know what your doing?

did a MECP certified installer do it for you?

there used to be at least a dozen things that could cause that whine.. back in the day..

stuff like not running speaker wires next to power wires.. making sure all your grounds are within 2 feet of the amps.. twisting/winding/twirling your RCAs the length of the setup.. just odd stuff.. I could leave a list of a dozen or so things..

Rubirunner85 · 10-14-2019, 01:15 AM

My speakers I installed for a small amp to plug into my phone had interference with my cb. I fixed it by unplugging the speakers.

Stuckntx · 10-14-2019, 08:07 AM

Aftermarket Sony XAV head unit, amp, and component speaker system. Was in the vehicle when I bought it. Was told and looks like a professional install. The guy was a maintenance freak and it shows throughout the truck so I dont doubt him.

The whine just started recently so Im inclined to think alt or ground. The whine does change in pitch with rpm change. Will that happen with a bad ground?

Aisin · 10-14-2019, 08:15 AM

Quote:

Originally Posted by Stuckntx

Was told and looks like a professional install.

Amateur shop. Retards probably ran the RCAs for the amp with the power wire for said amp. This is stereo install 101 yet shops still do it. If this is the case your entire system is probably fucking hack work. Seen it a lot when I dabbled in stereos. They only look nice if you don’t know what to look for.

paragon · 10-14-2019, 12:48 PM

Quote:

Originally Posted by ArTi54N

did you install it yourself? do you know what your doing?

did a MECP certified installer do it for you?

there used to be at least a dozen things that could cause that whine.. back in the day..

stuff like not running speaker wires next to power wires.. making sure all your grounds are within 2 feet of the amps.. twisting/winding/twirling your RCAs the length of the setup.. just odd stuff.. I could leave a list of a dozen or so things..

Quote:

Originally Posted by Aisin

Amateur shop. Retards probably ran the RCAs for the amp with the power wire for said amp. This is stereo install 101 yet shops still do it. If this is the case your entire system is probably fucking hack work. Seen it a lot when I dabbled in stereos. They only look nice if you don’t know what to look for.

do y'all try to come across as compete idiots or does it just come naturally?

santa V2.0 · 10-14-2019, 01:48 PM

Quote:

Originally Posted by paragon

do y'all try to come across as compete idiots or does it just come naturally?

I think you are right, they are battling for the title

rugger · 10-14-2019, 02:10 PM

Quote:

Originally Posted by santa V2.0

I think you are right, they are battling for the title

Thread needs a poll.

ExWrench · 10-14-2019, 02:13 PM

Quote:

Originally Posted by Stuckntx

The whine just started recently so Im inclined to think alt or ground. The whine does change in pitch with rpm change. Will that happen with a bad ground?

Yes. I'd look at all the ground straps engine-to-frame and body-to-frame before fucking around under the dash. Decent chance it's a braided ground strap that fatigued and gave up. If it's not that, it's probably another ground.

Aisin · 10-14-2019, 02:40 PM

Quote:

Originally Posted by paragon

do y'all try to come across as compete idiots or does it just come naturally?

Shut the fuck up. Just because I know what causes alternator whine doesn’t give you a pass to be a cunt. I offered constructive input. You ran your fucking mouth.

paragon · 10-14-2019, 04:10 PM

Quote:

Originally Posted by Aisin

Shut the fuck up. Just because I know what causes alternator whine doesn’t give you a pass to be a cunt. I offered constructive input. You ran your fucking mouth.

You offered up dick.... and you know dick.

you made a conclusion with absolutely zero information and told the OP he was wrong in what he was told.

You helped someone wire speakers one time, so now you can claim a business is an "amateur shop."

paragon · 10-14-2019, 04:17 PM

OP

quick and easy would be to try to tie the ground from the amp and head to the same ground.

actually, quick and easy would be a ground loop isolator but you do some fidelity, although that might not matter for your application.

bdkw1 · 10-14-2019, 05:13 PM

Quote:

Originally Posted by ExWrench

Yes. I'd look at all the ground straps engine-to-frame and body-to-frame before fucking around under the dash. Decent chance it's a braided ground strap that fatigued and gave up. If it's not that, it's probably another ground.

This^^^^ if it just started, it's a ground going south. If it was a shit install, it would have been there all along. About a 15% chance your Alt is shiting the bed.

DMG · 10-14-2019, 05:37 PM

I would check the grounds but also consider that when the rectifier goes bad in an alternator it can bleed AC into the electrical system and cause strange stuff like noise. It would happen in the first 10 min of driving because that is when the alter is working hard to bring the charge up.

Roc Doc · 10-14-2019, 05:44 PM

Quote:

Originally Posted by DMG

I would check the grounds but also consider that when the rectifier goes bad in an alternator it can bleed AC into the electrical system and cause strange stuff like noise. It would happen in the first 10 min of driving because that is when the alter is working hard to bring the charge up.

Ding. It didn't used ta whine, now it does whine.

ExWrench · 10-14-2019, 05:57 PM

Quote:

Originally Posted by bdkw1

This^^^^ if it just started, it's a ground going south. If it was a shit install, it would have been there all along. About a 15% chance your Alt is shiting the bed.

Quote:

Originally Posted by DMG

I would check the grounds but also consider that when the rectifier goes bad in an alternator it can bleed AC into the electrical system and cause strange stuff like noise. It would happen in the first 10 min of driving because that is when the alter is working hard to bring the charge up.

Quote:

Originally Posted by Roc Doc

Ding. It didn't used ta whine, now it does whine.

X whatever that the alternator could be going (I was hyper-focused on the ground question

).

If it was the stereo cable routing, it would've always been there.
Recently popped up = 95+% chance ground or alternator needs a-fixin'.

carslut · 10-14-2019, 06:04 PM

Quote:

Originally Posted by rugger

Thread needs a poll.

poll.......... positive or negative?.......

whistle pig · 10-14-2019, 06:27 PM

Did you replace the alternator? My truck had zero whine before the alternator went out. The new alternator induced whine in the stereo from the minute I started it up. I will be getting a different one when I get time.

If you didn't, then start checking grounds as said above. Don't just look at them, take them off and clean under all of them you can.

10-13-2019, 10:05 PM	#1 (permalink)
Stuckntx Registered User Join Date: Jul 2017 Member # 774777 Location: North Mexico Posts: 396	Alternator whine through speakers. Alright so my burb has developed a whine through the speakers. Im pretty sure its the alternator but what has me questioning my diagnosis is that its intermittent and it usually goes away after about 10 minutes of driving or so. Anyone have any similar issues and did you fix it? Will a noise reducer on the alt to bat wire help?

10-13-2019, 10:10 PM	#2 (permalink)
stjames151 Registered User Join Date: May 2008 Member # 113619 Location: Right behind you Posts: 3,324	In my experience, that’s caused by a ground short near the head unit. __________________ [QUOTE=Roc Doc;11597106]This is so weak it makes Richard Simmons look like he's UFC ready.[/QUOTE] [QUOTE=ironpig70;13786791]But it renforces the point to kids guns are toys.[/QUOTE]

10-14-2019, 01:15 AM	#10 (permalink)
Rubirunner85 Registered User Join Date: Aug 2017 Member # 777769 Posts: 664	My speakers I installed for a small amp to plug into my phone had interference with my cb. I fixed it by unplugging the speakers. __________________ https:// To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. My dog will eat you

10-14-2019, 04:17 PM	#19 (permalink)
paragon Registered User Join Date: Dec 2004 Member # 40266 Location: Jackson, MS USA Posts: 24,072	OP quick and easy would be to try to tie the ground from the amp and head to the same ground. actually, quick and easy would be a ground loop isolator but you do some fidelity, although that might not matter for your application. __________________ [COLOR="Black"]. ... [/COLOR] [CENTER][FONT="Franklin Gothic Medium"][SIZE="4"]"For God and country, Geronimo, Geronimo, Geronimo"[/SIZE][/FONT][/CENTER]

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10-13-2019, 10:11 PM	#3 (permalink)
east_beast Registered User Join Date: Mar 2000 Member # 377 Location: in the woods Posts: 10,468	Before you do anything else, check and make sure your ground is secure.

10-13-2019, 10:20 PM	#4 (permalink)
bdkw1 Registered User Join Date: May 2010 Member # 161331 Location: Misery Posts: 1,638	Check all your grounds. Motor to chassis and body to chassis.

10-13-2019, 10:23 PM	#5 (permalink)
Aggie06 Granite Guru Join Date: Nov 2008 Member # 123554 Location: Portland, TX Posts: 725	Aftermarket head unit? My 2010 did that. I found a slightly loose ground causing it. Drove me nuts for months until I found it. Sent from my iPhone using Tapatalk

10-13-2019, 11:47 PM	#7 (permalink)
takotruckin Registered User Join Date: Jan 2008 Member # 106178 Location: Fresno-ish Ca Posts: 3,905	If the alternator is charging properly and just making some noise then I would just turn the radio up and ignore it.

10-14-2019, 12:02 AM	#9 (permalink)
ArTi54N Registered User Join Date: Dec 2007 Member # 104539 Location: SW Austin, Tx. Posts: 707	did you install it yourself? do you know what your doing? did a MECP certified installer do it for you? there used to be at least a dozen things that could cause that whine.. back in the day.. stuff like not running speaker wires next to power wires.. making sure all your grounds are within 2 feet of the amps.. twisting/winding/twirling your RCAs the length of the setup.. just odd stuff.. I could leave a list of a dozen or so things..

10-14-2019, 08:07 AM	#11 (permalink)
Stuckntx Registered User Join Date: Jul 2017 Member # 774777 Location: North Mexico Posts: 396	Aftermarket Sony XAV head unit, amp, and component speaker system. Was in the vehicle when I bought it. Was told and looks like a professional install. The guy was a maintenance freak and it shows throughout the truck so I dont doubt him. The whine just started recently so Im inclined to think alt or ground. The whine does change in pitch with rpm change. Will that happen with a bad ground?

10-14-2019, 05:37 PM	#21 (permalink)
DMG Registered User Join Date: Nov 2001 Member # 8145 Location: the Iron City Posts: 14,511	I would check the grounds but also consider that when the rectifier goes bad in an alternator it can bleed AC into the electrical system and cause strange stuff like noise. It would happen in the first 10 min of driving because that is when the alter is working hard to bring the charge up.

10-14-2019, 06:27 PM	#25 (permalink)
whistle pig Registered User Join Date: Feb 2005 Member # 43727 Location: North Louisiana Posts: 3,269	Did you replace the alternator? My truck had zero whine before the alternator went out. The new alternator induced whine in the stereo from the minute I started it up. I will be getting a different one when I get time. If you didn't, then start checking grounds as said above. Don't just look at them, take them off and clean under all of them you can.

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