I've seen zero mention of ANC being used in Civic. Also can't say as I've noticed what you describe.
i think Go Cart might be hitting it on the nail with this one since it has to be coming from somewhere along the drive train or even the brakes. You'll be lucky if its as simple as something brake system related.This 'sounds ' like a brake pad rubbing.
Front or rear might be tested by jacking and spinning the wheels. Listen w your stethoscope like device. If it is in front, it is easy to lube the caliper slides, or better,, wait for it to wear in.
Incomplete retraction of rear brake pad may be more involved because a motor screws the caliper pad towards the disc when the parking brake is used. Don`t use it for a while and see if it helps.
Wearing in will help both F&R brakes get quieter.
That is a Friday guess from 1000 miles away.
It's not purely due to the brakes since he's coasting to a stop when the hum appears.For me, it isn't when I apply the brakes, but when coasting to a stop. As soon as I stop at idle, it's gone and the engine is pretty quiet. Although the stock tires and brakes do seem needlessly noisy, but that I think is a different problem. lol
Evening, all! I picked up my EX a couple of weeks ago and have noticed a strange and sometimes uncomfortable low frequency sound when I'm coasting to a stop. The best way I can describe it is a hum (or whir?). It only happens when coasting and stops immediately when the car stops at idle. I was thinking that it was just the engine revving down for a brake assist but I mentioned this in the office and a coworker immediately said it was an active noise cancelling feature and the sound was coming from the speakers. I found a few complaints and discussions of the ANC in the accord forums but no mention of it for the Civics. Has anyone heard this noise? Anyone else think it's ANC?
This is a great idea! I tried to get a video on my phone while driving home in traffic. It didn't turn out well. You can hear road and engine noise, but it doesn't do the sound justice. I do think it's just the sound of the drive train. It hasn't been as bad for me lately. At first it was almost painful, but now it's not bad. I'll give this idea a try and let you all know what it does.Most likely tires/road surface or CVT "braking". Next time you hear it carefully kick the tranny into neutral and see if it goes away.
ANC isn't an option on USA Civics.
Just wanted to chime in and say I am experiencing this weird issue with my brand new hatch. A humming noise of some sort. What was mentioned as a drive train resonance is a good way to describe mine. I will keep you posted and I will try the "put it in neutral" method while driving and see if the sound goes away.I just wanted to update everyone on this. I was able to determine that this noise only occurs when the engine is running between about 1200 and 1500 RPM. So I'm going to say that this is just the resonance of the drive train and for some reason, my ears are sensitive to it. I thought this was going to be a big issue for me, but I think I'm used to it now. Thanks for all the discussion on this! It's much appreciated.