Hey, I just recently bought a 1987 5.0 LX and I was told by the owner that the radio tended to make noises at times. Well I didn't really mind not being able to listen to my radio at first, but now would like to try and fix it so I can listen to it. There's an aftermarket deck that has a CD player, speakers in the doors, and amp. I'm pretty sure that it's alternator whine because from what I read if the whine sound that it has increases and decreases with rpms then that's what it would be. It makes this whine when the radio is on and when a CD is in only when the engine is on, when it is off it sounds fine. I tryed unplugging the RCAs and listening for any sound and I heard none so I would imagine that the amp is grounded fine. From what I have read and understanded I need a noise filter/noise suppression kit. Wanted to get some input on this before I go and doing anything that I don't need to do. Any help would be great. Thanks in advance.
I would try posting your question on a stereo message board for more answers...but since you asked: A lot of the times el cheapo spark plug wires have inadequate rf suppression, so you hear that whining sound. Another thing you can try doing is see where the ground for the amp is. It should be as close to the amp as possible. You can also try turning down the gain on the amps too. A lot of the time turning it down works.
my alt. use to whine, and It got louder over time (a couple of days). It was louder than my exhaust! So instead of driving it and risk getting stranded, I replaced it!!
