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Author Topic: Whirring sound when Slowing Down  (Read 15069 times)

Offline Ender

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Whirring sound when Slowing Down
« on: October 06, 2009, 11:28:25 AM »
Recently I began to notice whenever I slow down, I can hear a very soft whirring sound get lower and lower pitch as the car come to complete stop and it's gone. The sound appears to come from my CVT tranmission, the gear stick area.

Any bros has heard this noise?
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Offline rongshu

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Re: Whirring sound when Slowing Down
« Reply #1 on: October 06, 2009, 12:34:55 PM »
I noticed this also.  Started around 30k.
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Offline Zippy

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Re: Whirring sound when Slowing Down
« Reply #2 on: October 06, 2009, 12:57:08 PM »
Yup, i got this from 5000km onwards... Asked TCM to check during my 5k service. They claim it's the CVT gears making noise... Cannot do anything...  :nonod:
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Offline Ender

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Re: Whirring sound when Slowing Down
« Reply #3 on: October 06, 2009, 01:24:34 PM »
So this is normal? I was worried that my cvt tranny may be going soon.., now only 47K..
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LaChio

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Re: Whirring sound when Slowing Down
« Reply #4 on: October 06, 2009, 04:54:34 PM »
Quote from: Ender on October 06, 2009, 01:24:34 PM
So this is normal? I was worried that my cvt tranny may be going soon.., now only 47K..

No, it's not normal. If there is any funny sound or noise, that means something is not right. Since your ride is still under warranty, better bring it to TC for check before it leads to bigger or more serious problem/damage (we can never know). Don't play play, CVT is much more expensive than normal auto transmission.

My ride coming to 4 yrs/90,000km liao but don't have such sound, touch wood!
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Offline Latiorarri

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Re: Whirring sound when Slowing Down
« Reply #5 on: October 08, 2009, 08:57:23 AM »
Mine also have this sound when slowing down... like a jet engine sound right??? I tot i read a post some where that this is normal for CVT... i might be wrong..
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Offline jliow

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Re: Whirring sound when Slowing Down
« Reply #6 on: October 08, 2009, 10:29:40 AM »
I also experience this whirling down and up sound when travelling low speed slowing down or lightly speeding up, between 10 - 30KM/hr on my 4 AT, this this sound comes on after heavy usage?

Any feedback?
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Offline blue-latio

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Re: Whirring sound when Slowing Down
« Reply #7 on: October 08, 2009, 01:51:21 PM »
Yes, heard this from my CVT too, a subtle sound like jet engine, also when slowing down, and then the sound stops.
some say its the normal sound of CVT.

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Offline papajo82

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Re: Whirring sound when Slowing Down
« Reply #8 on: October 12, 2009, 03:05:39 PM »
I've experience it also in my my cvt ride too. Can hear it clearly after heavy usage and without turning on the radio. Wondering if it is normal for cvt engine... :confused1:
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Offline Ender

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Re: Whirring sound when Slowing Down
« Reply #9 on: October 12, 2009, 05:17:58 PM »
Quote from: papajo82 on October 12, 2009, 03:05:39 PM
I've experience it also in my my cvt ride too. Can hear it clearly after heavy usage and without turning on the radio. Wondering if it is normal for cvt engine... :confused1:
What's your mileage? Mine 47K. The noise is subtle, can hear it if the radio is not loud.

I did a test, when I stepped the brake to slow down, I switch the gear to neutral. The noise is still there..
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Offline Latiorarri

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Re: Whirring sound when Slowing Down
« Reply #10 on: October 13, 2009, 10:49:56 AM »
Aeh swtich to neutral.. CVT still spinning mah.. just that power now transferred from engine to wheels??

http://www.youtube.com/watch?v=MhFK5gfAGpM&feature=related
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Offline Latiorarri

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Re: Whirring sound when Slowing Down
« Reply #11 on: October 13, 2009, 10:56:05 AM »
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Offline Ender

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Re: Whirring sound when Slowing Down
« Reply #12 on: October 13, 2009, 11:07:55 AM »
The way I can describe is more like a small electric motor spinning down...
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Offline clarence

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Re: Whirring sound when Slowing Down
« Reply #13 on: October 13, 2009, 11:55:19 AM »
Quote from: Latiorarri on October 13, 2009, 10:56:05 AM
Another video on CVT..

http://www.youtube.com/watch?v=clqfe8cs1_E

Judging from the above video, CVT seems to provide the convenience of automagtic transmission but with the engine brakes of a manual.

Can those CVT Latio owners comment?

Is it true?
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Offline liewks

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Re: Whirring sound when Slowing Down
« Reply #14 on: October 18, 2009, 04:33:00 AM »
There's the usual fine quiet high pitched whirring and then there is the other lower pitched humming/whirring drone. The first sound has been there since the taking delivery of the car. The latter happened a few months back. TCM changed out the a/c compressor and pulleys. Sound went away...
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Offline papajo82

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Re: Whirring sound when Slowing Down
« Reply #15 on: October 19, 2009, 09:45:17 AM »
Quote from: liewks on October 18, 2009, 04:33:00 AM
There's the usual fine quiet high pitched whirring and then there is the other lower pitched humming/whirring drone. The first sound has been there since the taking delivery of the car. The latter happened a few months back. TCM changed out the a/c compressor and pulleys. Sound went away...

Guess i need to pay a visit to TCM anytime soon...

Quote from: Ender on October 12, 2009, 05:17:58 PM
What's your mileage? Mine 47K. The noise is subtle, can hear it if the radio is not loud.

I did a test, when I stepped the brake to slow down, I switch the gear to neutral. The noise is still there..

Sorry for the late reply. Mileage around 60K.
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Offline Ender

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Re: Whirring sound when Slowing Down
« Reply #16 on: October 25, 2009, 12:44:45 AM »
Finally went down to TCM today with two complaints,

1. Squeaky noise from engine compartment when gear is engaged.
Fix : Renew Exhaust Cones

2.Whirring noise during slowing dwon
Fix: A/C compressor change

Parts
1. Bearing Seal
2. BRG Ball
3. Air Con Compressor.

Also top up of FREON gas..

All no charge as under warranty. First day try out, seems the problems have been eradicated.
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Offline Latiorarri

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Re: Whirring sound when Slowing Down
« Reply #17 on: October 25, 2009, 09:27:13 PM »
hohoh.. this is bad... looks like need 2 go for check up liao.. may i know which branch u went??
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Offline leolooi

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Re: Whirring sound when Slowing Down
« Reply #18 on: October 26, 2009, 10:29:10 AM »
thks bro for sharing...went to the last round svc complain abt this noise but all they say is aircon compressor but nvr did anytin....mus go screw them next time round man.... :mad:
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Offline Ender

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Re: Whirring sound when Slowing Down
« Reply #19 on: October 26, 2009, 11:02:12 AM »
Quote from: Latiorarri on October 25, 2009, 09:27:13 PM
hohoh.. this is bad... looks like need 2 go for check up liao.. may i know which branch u went??

TP..the SA is Steven.. Wanted to leave a good feedback online, but couldn't find any link to it. Day 2 liao, both noises are gone.



Quote from: leolooi on October 26, 2009, 10:29:10 AM
thks bro for sharing...went to the last round svc complain abt this noise but all they say is aircon compressor but nvr did anytin....mus go screw them next time round man.... :mad:
I went in with only my complaint without servicing, probably why they have time to change the A/C compressor. My guess is if complaint during servicing, especially a major one, they may be squeezed for time and give you a temporary fixed if it's not too serious.  When I sent in my car at 9am, I got a SMS at around 5pm. So I guess they really took a long time to change the compressor and other fixes.
« Last Edit: October 26, 2009, 11:04:10 AM by Ender »
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