Never ending Alt whine

[ngsm13 5,000+ posts]

Take the headunit to the amp and power it direct from the amps terminals. Jump the ignition to the constant on the deck harness. Use a new set of rca cables. Ensure that the amp is not mounted to any metal and that it is not touching any metal, put some cardboard under it. Do not plug the antenna in either. Retest and post the results.

Do this.

nG

 

[supa_c 5,000+ posts]

I will //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[ngsm13 5,000+ posts]

On my brother's car, he dealt with it for over a year.

Then one day, I took a set of RCA's... shitty audiobahn ones... and ran them with the HU in my hand and straight to the amp (in mid air).

Got rid of the whine.

nG

 

[supa_c 5,000+ posts]

The rca's are really touchy too. If you move them on the amp you can get this really weird whine/scream noise, makes you want to shut the h/u off it sounds so bad.

 

[ngsm13 5,000+ posts]

Humph.

nG

 

[Team Hammer 10+ year member]

The Diodes could be some cheap crap. GM and Chy are known for this. Try changing them out with some good ones.

 

[BassAddictJ 5,000+ posts]

not gonna bother reading th last 4 pages...but if it hasnt b een mentioned go to walmart and pickup the little 15 dollar ground loop isolator / noise filter, its an inline RCA module.....worked wonders for me when i couldnt solve my noise/whine with my sub amps...only happened when i plugged my old mtx 1501d's RCAs in. plug in that module and it fixed it jimminyslpiff

 

[Motovet 10+ year member]

The Diodes could be some cheap crap. GM and Chy are known for this. Try changing them out with some good ones.

What are these? I have a problem with our Tahoe, and have not figured it out after trying everything.

 

[Team Hammer 10+ year member]

What are these? I have a problem with our Tahoe, and have not figured it out after trying everything.

They are part of the Alt. Most of the GM and Chy ones leak back and cause noise.

Also Make sure the Alt has a good ground to the frame.

 

[supa_c 5,000+ posts]

we did a temp ground from the battery- to the alt case, didnt do anything.

The more i hear about the problems in the alt, the more suspect i am of it

 

[Blackcharger06 10+ year member]

Did you guys ever fix this? I have the same car. //content.invisioncic.com/y282845/emoticons/fro.gif.c695f1f814b01c4ad99fe7f8cccadd29.gif:fro://content.invisioncic.com/y282845/emoticons/fro.gif.c695f1f814b01c4ad99fe7f8cccadd29.gif:fro:

 

[dalucifer 10+ year member]

yes sir.. It was that POS memphis belle amp