hey guys, yesterday my radio started acting funny it makes a high pitched noise when the car is moving and not as much when stopped, it just started doing this and i didn't touch the system at all it has been the same way for 4 months and this problem just started. The noise gets higher in pitch as the revs go up, it sounds like a really high whistle and its not a vaccuum leak because the noise is not present when the stereo is off. If anybody could tell me where to begin or just adivice that would be great.

~Clean

 

weird! sorry, i'm no help but i just think that it is really weird how your radio could be related to the engine in any way. is it coming from the headunit, or the speakers?

 

the noise is coming from the speakers

 

my dads cobra did the same thing, turned out to be a bad ground somewhere.

 

the in the audio forum, there's a bunch of threads that have to do with the same subject, it is a bad ground, check the connections.

 

yeah had this same problem, Pretty sure its a bad ground that maybe came loose.

 

where would the ground be located?

 

If you are running an after market amp then it may be the ground on the amp or just the quality of the amp. Unfortunatly this problem happens alot with the factory BOSE systems. Each speaker has its own amp built in to the speaker, meaning that there is an amp in each door. When they get some dirt and moisture on the circiut they start makimng ungodly noises. Highpitch squeels, scratchy sounds, intermittent sound, and low end thuds. If it is the factory system the only way to fix it is to replace all 4 speakers and the radio. It's not cheap.
Choray

 

My alternator made that noise for a few weeks before it crapped out.

 

wow i have Bose and now im in a $hytty situation, thanks for all the help guys it is greatly appreciated

 

I just got a new alt 3 months ago!!!! dont tell me thats the problem again! ahhhh

 

could it be anything else but the grounds and alt?

 

Reground the ALT and headunit.

 

I have the same thing happening after I put in my amp/sub. But I'm fairly sure its my ground (gotta try to find a good one) and I'm putting a noise suppressor on my alt. BTW, does anybody know where a good ground is located in the trunk?

 

A good ground is any metal part of the vehicle, but if it is pained you should scrape off the paint where the wire is making contact .

 

i just got my alt checked its putting out 14.84 which is normal

my a/c only works on 4 lol i just found this out today, and ideas with this new problem


there is always somthing

 

thats an easy one to resolve. i come across this one weekly. the diode has gone in your blower resistor pack. behind the glove box you will find the resistor pack facing you with normally a 4 pin spaded multiplug in it. (ive never looked at mine but nissans are normally all the same). there is 2 screws holding it in. remove it, you will see a diode in it. all you have to do is scrape clean both sides of diode & solder a thickish wire link across. replace it & all your speeds will return. its only a 20 min job.

if you need more info then i can take pics from mine & guide you through it.

 

thanks a ton, im gonna do that tomorrow

take that off the list of things to do:

-knock sensor
-figure out the radio whine
-new brakes
-new rotors
-alignment
-install my drop
-get new tires
-fix dome light
-fix a/c
- new bumpstops
-new plugs
-clean coils


my god the list keeps growing and growing, i might sell it