so my friend has wrecked his maxima twice now (1997). I think in the last one, after getting things repaired, he noticed a really lound whining sound. I am sure it is his alternator as it gets louder when u accelerate (either parked, neutral, or driving).

I told him a year and a half ago his alternator is going to explode and he'll be sorry then lol. BUT, it still whines and hasn't noticed any other problem. I'd think if it's a bad alternator, it would have crapped out on him now.

Could there be a ground problem? His speakers whine too and his headunit and speakers seem properly grounded. (aftermarket)

Anyone have any suggestions? Anything specific to look for?

thanks

btw- he ran his car through nissan and they said he wans't elidgible for the recall.

 

Bad bearings can cause the noise and the alt still function properly.

 

bearing in what?

 

In the alternator.

 

this may help
http://forums.maxima.org/showthread.php?t=314911

 

doesnt the alternator whine when it is on its last string??

 

I bought this car in March. The alternator went out in April (about 2-3 weeks after putting in subwoofer).

The new nissan alternator started whining within a few days, but no problems after 6 months. It whines, but I can't hear it with the stereo on at normal volume.

Oh, and if I disconnect the power cable to the sub amp, it quits whining.