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Humming sound from Fit Hybid 2018

Wildfaye29

By Wildfaye29,
in Maintenance & Repairs

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PSP415

PSP415

Supersonic

Paiseh, I originally thought it could be due to alternator but u clarify that hybrid no alternator. 

I Googled and this came up :

Screenshot_20221120_202729.thumb.jpg.d635ebf1a0be8f78555df6e1975187de.jpg

Not sure if u checked this and its cleared. Just curious and hope u are able to resolve it soon. 

Stay safe 

Cheers 

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zipping

zipping

Supersonic
22 minutes ago, Wildfaye29 said:

Car has traction control. 

On hoist max 20+km.

Cannot hear anything obvious.

iirc, traction control can be switch off

 

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Mkl22

Mkl22

Supersonic
(edited)
52 minutes ago, Inlinefour said:

my last car same humming sound[drivingcar]

spend a big bomb at 6 diff WS

 

 

 

in the end :slow:

 

 

sound is caused by brake dust build up 

 

 

wah piang eh really bang balls :a-bang:

Thanks for educating us! 😁
what car? So sensitive 

Edited by Mkl22
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Wildfaye29

Wildfaye29

Turbocharged
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54 minutes ago, PSP415 said:

Paiseh, I originally thought it could be due to alternator but u clarify that hybrid no alternator. 

I Googled and this came up :

Screenshot_20221120_202729.thumb.jpg.d635ebf1a0be8f78555df6e1975187de.jpg

Not sure if u checked this and its cleared. Just curious and hope u are able to resolve it soon. 

Stay safe 

Cheers 

Its dual clutch transmission. There is no torque coverter because is actually a manual gearbox in disguise.

But I'll check if the transmission is low on fluid. Thanks.

Also, all the engine mounts and transmission mounts are all intact.

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Wildfaye29

Wildfaye29

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44 minutes ago, zipping said:

iirc, traction control can be switch off

 

Never switch off before! Totally forgot this button exists!

Will try to check out on hoist again with this turned off!

Thanks!

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Wildfaye29

Wildfaye29

Turbocharged
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Hoisted up the car with the undercarriage cover removed.

All axel joints are perfect, no tears, no leaks.

No leaks from engine, or gearbox. All dry and clean.

ahhh... this is freaking me out...

 

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PSP415

PSP415

Supersonic
(edited)
1 hour ago, Wildfaye29 said:

Hoisted up the car with the undercarriage cover removed.

All axel joints are perfect, no tears, no leaks.

No leaks from engine, or gearbox. All dry and clean.

ahhh... this is freaking me out...

 

Why not drive down to Ah Heng, SKM Motors at First Centre, Kaki Bukit Ave 2 for him to help you listen and perhaps can pinpoint possible culprit(s)? Or let him do a test drive with you. 

Rong time ago, my Jazz 1.5 (A) had a distinct humming/wheezing sound and he took it for a test drive. My wheel bearings. Mileage then was 112k km. 

Replaced them and ride was quiet as a church mouse, me poorer like one too after that. 😅😂😂😂

Took the opportunity to change fuel pump n filter plus a host of stuff. 

Just sharing. 

Stay safe 

Cheers 

PS : if you want to avoid long queues, best to drop by between 9.15-9.45am to wait otherwise quite busy once workshop open at 10am.

Edited by PSP415
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Rickster

Rickster

5th Gear
15 hours ago, Wildfaye29 said:

General info

7 Speed Dual Clutch gearbox

1.5L engine with Hybrid

4 year old

55k Kms

Servicing done every 10K - Engine oil+filter

Other major fluids every 20K - Brake, clutch, gearbox, coolant

Symptoms:

I am experiencing a strange humming sound from the front of the car which gets louder as the speed increases.

Recently changed to a set of Goodyear Assurance Triplemax 2 from JB (early Oct) - Tyres are relatively quiet, after about 3 weeks and 800kms suddenly the humming sound surfaced, suspected tyre run-in and got noiser, hence swop front to rear and the sound persisted.

Swoped 4 tyres with my friend's Bridgestone RE004(20k km) and the sound is still present. Verdict - Not tyres.

Did some running tests with the following results:

Car will swop between engine and EV battery mode during cruising - in both modes - sound persisted.

While humming is present - shifted to Neutral gear to coast - sound persisted.

My mechanic (not PI workshop) suspects the noise is coming from the gearbox main shaft bearing as it is constantly in motion even if the gears are not engaged.

I would like to seek some advise on the possible cause of this noise before I seek a second opinion and possibly try to claim warrantly for any premature wear from my PI.

🙂 Thank you very much in advance 🙂

I have an almost similar problem in my previous car with humming sound coming from the front engine compartment (hard to pinpoint where exactly).

Sound will not be there when i'm travelling below 50 km/hr, will get louder as i reach 80 km/hr. Then beyond 80km/hr, the humming sound will be gone.

Thought was gearbox, so i tried multiple times to put the gear (dual clutch) into neutral and the sound is still there, tried without a/c, the sound still there between 50-80.

In the end, it was the front left drive shaft. Got it replaced under warrant and sound is totally gone.

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Rickster

Rickster

5th Gear
(edited)
13 hours ago, Wildfaye29 said:

Hoisted up the car with the undercarriage cover removed.

All axel joints are perfect, no tears, no leaks.

No leaks from engine, or gearbox. All dry and clean.

ahhh... this is freaking me out...

Probably may be a good idea to go back to AD if another workshop still can't figure it out. Ideally, the AD can diagnose the problem and u can go 3rd party workshop to get the fix.

Edited by Rickster
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Mancypher

Mancypher

3rd Gear
52 minutes ago, Rickster said:

Probably may be a good idea to go back to AD if another workshop still can't figure it out. Ideally, the AD can diagnose the problem and u can go 3rd party workshop to get the fix.

Fit Hybrid is PI unit. AD only have latest Jazz e:HEV

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Gnahp

Gnahp

Turbocharged

last night when I was driving on expressway

I heard a faint humming sound from the back of the car

at first I thought there was a motorcycle hiding in my blind spots

after checking, no motorcycle

the buzzing sound gets louder and pitch become higher when I driving faster

below certain speed it disappear 

then I remember this topic in MCF

my mind was occupied by all the possibilities

after dinner when I walked towards the car 

I saw this hanging on the back of the car, kiap by the boot lid

it's from the clothes that my wife bought earlier on 😑

il_fullxfull.3674553425_gctz.jpg

 

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Wildfaye29

Wildfaye29

Turbocharged
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19 hours ago, PSP415 said:

Why not drive down to Ah Heng, SKM Motors at First Centre, Kaki Bukit Ave 2 for him to help you listen and perhaps can pinpoint possible culprit(s)? Or let him do a test drive with you. 

Rong time ago, my Jazz 1.5 (A) had a distinct humming/wheezing sound and he took it for a test drive. My wheel bearings. Mileage then was 112k km. 

Replaced them and ride was quiet as a church mouse, me poorer like one too after that. 😅😂😂😂

Took the opportunity to change fuel pump n filter plus a host of stuff. 

Just sharing. 

Stay safe 

Cheers 

PS : if you want to avoid long queues, best to drop by between 9.15-9.45am to wait otherwise quite busy once workshop open at 10am.

Thanks for suggesting a good ws to help me troubleshoot!

will need to slot in time for this asap!

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Wildfaye29

Wildfaye29

Turbocharged
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9 hours ago, Rickster said:

I have an almost similar problem in my previous car with humming sound coming from the front engine compartment (hard to pinpoint where exactly).

Sound will not be there when i'm travelling below 50 km/hr, will get louder as i reach 80 km/hr. Then beyond 80km/hr, the humming sound will be gone.

Thought was gearbox, so i tried multiple times to put the gear (dual clutch) into neutral and the sound is still there, tried without a/c, the sound still there between 50-80.

In the end, it was the front left drive shaft. Got it replaced under warrant and sound is totally gone.

I also suspect its the drive shaft.

But my undercarriage is totally nice and clean.

None of the CV boots are torn! I am hoping its inside the boots thats making all the noise but not yet to the point its torn.

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kobayashiGT

kobayashiGT

Internal Moderator

I would suspect it is the alternator too. But then again, if you realised that you have some issue, you might wanna go down and speak to your mechanic, they can troubleshoot with all the proper equipment. I think no point for us to make wild guesses. 

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Fitvip

Fitvip

Supersonic
22 minutes ago, kobayashiGT said:

I would suspect it is the alternator too. But then again, if you realised that you have some issue, you might wanna go down and speak to your mechanic, they can troubleshoot with all the proper equipment. I think no point for us to make wild guesses. 

HIs is hybrid. He said no alternator.

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kobayashiGT

kobayashiGT

Internal Moderator
5 hours ago, Fitvip said:

HIs is hybrid. He said no alternator.

I see, cuz last time my car also have humming sound, then is alternator. So I speak from my experience. 

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