about a month ago, my 2000 v6 coupe accord start having a whistling sound that can be heard inside the car, i went outside to get it check and the mechanic told me that it was the alternator making that sound, my question is that if the alternator was makin the sound then wouldn't i hear it from outside also? the other problem i was lookin at is that i saw a lot of people having EGR valve problem in this model so how much would it be to replace an EGR valve and how do u know if there is something wrong with it.

thank you very much

 

my gf's 5th gen does this, i think it's related to the ac system. does it sound like coming from the passanger side?