Noise? coming from the hood of the car? on 2006 BMW 525xi

i have a 2006 bmw 525xi, and i it started making a noise a couple ofdays ago, it sounds like there is something trapped in the fan, and when i accelerate the noise gets louder. What is it? HElp! I took it an independent mechanic and he stated that it was the alternator, is that even true?

Asked by for the 2006 BMW 525xi
1 answer
When the bearings in the alternator are beginning to fail they can be quite loud and the mechanic is probably right and check the repair price here www.repairpal.com/estimator