battery drain and rear speaker noise

[kingcobra9450]

Ok well I posted this a couple weeks ago and i still cant find the problem. My battery and alternator are brand new without underdrive pullies. When my car sits for over a week the battery is dead. With the car off i hooked up my amp meter and there is almost a 12 volt drain from the fuses for my alt, audio and int lamps. I checked and there arent any lights that stay on and i unplugged the 2 amps under the speakers but the drain was still there. Also there is like a whining noise coming from the rears speakers almost every time i drive. however only once or twice did the noise correspond with revving my engine. Any ideas??? thanks

 

[Hockeyman48]

I assume you mean a 12 amp drain. Do you have a capacitor on your alternator. For sound attenuation? They can leak and drain battery.If they go bad, you get whining that increases with rpm's through your speakers

 

[006]

http://www.svtperformance.com/forums/showthread.php?t=478210

and further diagnostics:

http://www.svtperformance.com/forums/showthread.php?t=317175

 

[kingcobra9450]

I meant 12 volts (its a 12 volt battery) I should have said volt meter but they are all the same. Anyway this sound came both before and after the alt change so I dont think its the capacitor. I guess ill try some of the diagnostic stuff. This is really beginning to piss me off....

 

[SKMCOBRA]

When I bought my car four years ago the rear amps went bad shortly thereafter. My battery kept going dead if I didn't drive the car about every other day. Bought used amps from Wilson's Ford Salvage, swapped them out and no probs since.

 

[llDemonll]

my rear right speaker sometimes (1 out of 15 times or 20 times) will do the same thing, i just turn the car off, let it sit for ~30 seconds, turn it back on and im fine.

as for battery drain, check cables, check cables again, and check them again. easiest thing (if you have access) is to get a 10/300 amp-meter and hook it up to ur battery between the battery and a terminal (disconnect one and connect battery to cable w/ the meter) and start pulling fuses until you have less than ~250ma on the battery w/ the car off (assuming the draw is >250ma in the first place)

 

[Cookieman00x]

Sounds like a bad amplifier...

 

[venom1997]

i have the same battery drain problem i have a draw at the audio fuse in the engine compartment location i took the fuse out and no more drain could this be a bad amp problem which amp could it be also my stereo seams to work fine with no speaker noise? does a bad amp cause a drain to the audio circuit fuse?