[CU2] Strange humming/droning noise when accelerating from 0km/h

Hi guys, I'm a newbie here. Just got my CU2 last month. Hope to find some answers. Humming noise getting on my nerve. I know there's been questions similar to this. Tried searching for some answers but can't find a description that match my situation.

There is a humming/droning sound when accelerating from 0km/h:
- engine cold, and even after engine warmed up reached nominal temp
- sound comes regardless driving straight or turns
- steering operation normal
- air cond on/off does not make any difference
- sound pitch gets higher as speed/rpm increase, then fades awat when past 3k rpm
, but comes back when rpm reduce
- i can confirm it's not from the wheel, not from the rear, but somewhere in engine bay
- checked brake fluid, ok
- can't see any hose binding whatsoever
- belt seem okay, not loose
- can't confirm if losing power or not, because just started accelerating

The noise goes away completely after driving like 5-10 minutes, even when stopped at traffic light & start moving, it doesn't sound anymore.

Used to drive a Civic ET1 K20 engine, but never heard this sound before. Does anyone here have this issue?

Thanks.

Hi mate, not sure this is the ping issue problem..

Hi Praja, I thought so too, but I am using RON98 petrol, so it shouldn't ping. The sound is more like a deep humming / droning sound, and gets higher pitched noise when I accelerate, but fades off shortly after that. This happens only the first 5 to 10 minutes driving in the morning. Sometimes it sounds a little faint, but sometimes the sound is quite loud. Hope it's not a serious issue. Never had this in my previous Civic.

fuel wont change the ping problem. its an issue they havent found a fix yet.

but reckon u can record it on ur phone?

fuel wont change the ping problem. its an issue they havent found a fix yet.

but reckon u can record it on ur phone?

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Originally Posted by MR_LATE

fuel wont change the ping problem. its an issue they havent found a fix yet.

but reckon u can record it on ur phone?

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really fuel doesn't help with pinging?? :O

Mmmm serious. Been to honda too many time for this particular problems many time.

Many time ...

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Originally Posted by MR_LATE

Many time ...

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Bring a 12gauge next time and see if they are more willing to "help"

Not everybody have guns readily available Fred lol
Maybe ill try toyworld

are you talking about this sound?
http://www.youtube.com/watch?feature...&v=ryzKzSk4kkI

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Originally Posted by escape27

are you talking about this sound?
http://www.youtube.com/watch?feature...&v=ryzKzSk4kkI

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Yes. Very similar to that farting sound in that video from 12sec onwards. Doesn't sound like pinging to me?

Any idea what that annoying sound is, or where it's coming from? I never had this in my previous k20. But this k24 should be similar. Maybe it's the fuel quality in AUS (bad) ??

Thats def not the ping then.
Hey escape is ur car blue or purple????? Nice pic btw

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Originally Posted by kiat

Yes. Very similar to that farting sound in that video from 12sec onwards. Doesn't sound like pinging to me?

Any idea what that annoying sound is, or where it's coming from? I never had this in my previous k20. But this k24 should be similar. Maybe it's the fuel quality in AUS (bad) ??

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I don't think it is pinging sound to me either. I have been dealer with video 2times before. but they said they couldn't find any problem on my car.
I think that sound came from transmission.

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Originally Posted by MR_LATE

Thats def not the ping then.
Hey escape is ur car blue or purple????? Nice pic btw

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it is cobalt blue, thanks

I had the same sound on my CU2 Lux Navi Auto. My dealer said the same thing at first that they could not reproduce the sound and could find and thing wrong!
I made a recording on my IPhone for them and played it for the service manager. He then told me that he had another Euro with the same problem and was waiting on Honda Australia for advice. I was told to wait and they would contact me when they received advice from Honda Australia!!

A month later I contacted my dealer as I did here from them and was told Honda was still looking in to it, but my dealer asked me to leave the car over night and they would try and reproduce the sound.

The service manager told me he heard the noise and would be requesting a new auto transmission and torque converter for my Euro. Within a couple of days they received the go ahead from Honda Australia. My Euro auto transmission and torque converter was replaced and I have not heard the noise since. All this was over about 6 months going back and forth to my dealer.

I think this noise is a known Issue at Honda Australia and I would get your dealer to contact them .

Damxxx... really... Honda selling us lemon cars :(
I'm surprised they don't issue any recall.

Sambo73: How long did they take to change the tranny & torque converter? Did they provide a temporary replacement car for you?

Escape27: How about your car? Did you send to the dealership and had them changed too?

I hate going to dealership sometimes, for some reasons.

Goshh... Amazing an ancient 5 speed auto that is unchanged in the Euro since 2003 could still be problematic.

Maybe there's water in it... from the last tsunami... :confused:

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Originally Posted by kiat

Damxxx... really... Honda selling us lemon cars :(
I'm surprised they don't issue any recall.

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I don’t think Honda selling lemon cars, I think they know of an issue but still don’t know what is causing it.

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Originally Posted by kiat

Sambo73: How long did they take to change the tranny & torque converter? Did they provide a temporary replacement car for you?

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It took about 6 weeks as all part had to come from Japan!!! It took a day and half to replace and was given load car for that time.

Sounds lemon enough to me :(

Escape, are you still pursuing this with Honda? or given up with them already?

Should totally pursue. And escape fuark cobalt is sooooo nice. Dont see enough blueros around

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Originally Posted by boleh

Goshh... Amazing an ancient 5 speed auto that is unchanged in the Euro since 2003 could still be problematic.

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its' the same 4 spd tranny from the late 90's.... with an extra cog.

I think it's gone now tho (they probably gave up on it lols, since the next accord's gonna run on CVT's

My warranty has been expired on May. Been dealer before expired warranty for replace rust sunroof and explained a noise with video clip but they said they couldn't heard noise from my car. And if I bring me car to dealer with noise they will ask replace cost. Isn't it ?

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Originally Posted by escape27

My warranty has been expired on May. Been dealer before expired warranty for replace rust sunroof and explained a noise with video clip but they said they couldn't heard noise from my car. And if I bring me car to dealer with noise they will ask replace cost. Isn't it ?

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Give it a try, if they do ask for replacement... Slap them and walk away

before u slap them. grab ur crotch mj style, do a spin and when u stop slap them then moonwalk out
its all about style points

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Originally Posted by MR_LATE

before u slap them. grab ur crotch mj style, do a spin and when u stop slap them then moonwalk out
its all about style points

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Youtube pls.