what causes engine whine?

what causes engine whine on some a.m. stations and to get rid of it...? is it the ground method..? truck is a 2004 f-350 head unit is eclipse avn-5495

king244 wrote: what causes engine whine on some a.m. stations and to get rid of it...? is it the ground method..? truck is a 2004 f-350 head unit is eclipse avn-5495

Most of the time noise is caused by a bad ground, pull the HU out and make sure its grounded directly to the frame of the truck, also double check all your amps and there ground locationsHave a wire brush handy and dont be afraid to use it

--Skold

2004 Honda Civic Ex 4Dr

Kenwood DDX-7015/W Nav

4 Fosgate T152C

Hifonics Brutus BX1500D

RE XXX 12 in a 4 Cube Snail Shell

Actually AM noise is caused by one of two things. Your antenna might have a bad ground, but since your truck is new unless it has taken a hit I would doubt this. More likely, your ignition ( plugs and plug wires ) is overcoming weak AM stations thru your antenna. Resistor plugs and shielded plug wires should help. If the noise appears anywhere else besides AM Skold is right.

no, it is just on am on 2 stations.....have to listen to those yankees games ya know