High pitched whine nissan 2000 maxima

nissan
maxima

#1

I have a 2000 Nissan Maxima SE. The car has about 87000 miles on it. Of recent i noticed a high pitched whine while starting the car. This does not happen always. Also a couple of times the high pitched whine was heard by my wife while she was driving the car. Any ideas as to what is causing the sound