No, it doesn't make the sound at idle. The only time I would hear it on mine was when I was at about 1/4 throttle. It would make a really high pitched whinning, but when I would push the throttle a little more the noise would die down. It's a very noticable noise and is very annoying, so if your charger starts doing it you will know. Hopefully you will be problem free, good luck!
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