Hello all! When I start and idle my 2012 Mazda5, a noise from the drive belt area has been getting louder and louder recently. I have noticed that the sound goes down and up depending on the heater blower setting highest or low or off or headlights pulling extra power. Noisier when under load so I think the noise if from the alternator. Car starts fine but has never been strong, and it is now sluggish. I searched youtube and didn't see a video but did see a video on water pump replacement, how much harder is it to do the alternator at the same time? Anyone got a video? Removal of the engine mount to create space around belt area makes me nervous! THX!