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Humming sound while idling at traffic lights

Posted: Fri Aug 21, 2020 10:32 am
by wong.chris
hi all

I am currently driving my second 2006 8th gen. I drove the 1.8m before and then changed to the 2.0M recently. I noticed a humming sound that goes on for about 10-20 secs, stops and comes back again wherever I'm idling at a traffic light on both cars. May i know where the sound is coming from or has anyone encountered this sound before?