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Old 23rd March 2013, 00:23   #466
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Default Re: What's that sound ??

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Originally Posted by msaudf View Post
too early to have failed engine mounts but hey you never know. obvious signs of engine mounts failure is increased vibration throughout the car when the engine is in idle rpm. well, as you suspect them its best you check them out, also check the transmission mounts as well.
My guess is exhaust mounts either dislodged or perished.
No unusual Vibrations are felt when the engine is running at idle speed or at high revs. But, Whenever the doors are closed the heat shield around the exhaust pipe vibrates. Anyways, I would surely check the exhaust mounts!
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Old 26th March 2013, 12:14   #467
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Default Re: What's that sound ??

Model: Maruti Dzire VXI (Petrol)
Make: June 2009
Run: 55000 KM
Sound: Petrol engine have developed sound similar to that of Diesel engine.
When: on start up, Idling, while driving & revving engine.

It has suddenly developed such weird sound, I have serviced car at 53K in oct2012 & that time engine was super quite & its been hard to tell that whether engine is running or not, suddenly within couple of thousand KM this trouble has started.

Showed up to one of the trusted local mechanic, his diagnosis says connecting bearing gone Kaput. At 55K Km modern petrol engine's connecting bearing gave up ?
I don't agree with this one as there is no loss of power while driving this sedan neither car is getting unusually heat up nor its been stalled.

request expert opinion here, while going through this thread tsk has mentioned regarding A/C compressor issue, would that be a reason for this sound ?
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Old 27th March 2013, 13:57   #468
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Default Re: What's that sound ??

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Originally Posted by sankdeshmukh View Post
Model: Maruti Dzire VXI (Petrol)
Make: June 2009
Run: 55000 KM
Sound: Petrol engine have developed sound similar to that of Diesel engine.
When: on start up, Idling, while driving & revving engine.

It has suddenly developed such weird sound, I have serviced car at 53K in oct2012 & that time engine was super quite & its been hard to tell that whether engine is running or not, suddenly within couple of thousand KM this trouble has started.

Showed up to one of the trusted local mechanic, his diagnosis says connecting bearing gone Kaput. At 55K Km modern petrol engine's connecting bearing gave up ?
I don't agree with this one as there is no loss of power while driving this sedan neither car is getting unusually heat up nor its been stalled.

request expert opinion here, while going through this thread tsk has mentioned regarding A/C compressor issue, would that be a reason for this sound ?
How long did it take your mechanic to come up with his diagnosis? did you leave the car with him for some days and did he find out that the connecting rod bearing was the culprit after opening up the engine?

I don't think your mechanic is right mate.

To find out if the noise is coming from the engine itself you need to listen carefully while it is in idle. some tips are
1. is the sound consistent with rpm?
2. does it come at some rhythm and increase with higher rpm?
3. is it some clicking sound like 'tik tik' or groaning sound?

Check your car with any good engine specialist or you may have it checked at MASS. the noise could be coming from your alternator or Ac compressor.

Too early for engine problems at 55000kms unless your service centre forgot to fill it with engine oil while servicing the car, and then after realizing it they filled up oil and returned the car to you quietly.
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Old 27th March 2013, 22:54   #469
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Default Re: What's that sound ??

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Originally Posted by msaudf View Post
How long did it take your mechanic to come up with his diagnosis? did you leave the car with him for some days and did he find out that the connecting rod bearing was the culprit after opening up the engine?

I don't think your mechanic is right mate.

To find out if the noise is coming from the engine itself you need to listen carefully while it is in idle. some tips are
1. is the sound consistent with rpm?
2. does it come at some rhythm and increase with higher rpm?
3. is it some clicking sound like 'tik tik' or groaning sound?

Check your car with any good engine specialist or you may have it checked at MASS. the noise could be coming from your alternator or Ac compressor.

Too early for engine problems at 55000kms unless your service centre forgot to fill it with engine oil while servicing the car, and then after realizing it they filled up oil and returned the car to you quietly.
Mechanic took not more than 15-20 mins to come to this conclusion, he opened hood heard the noise revved up car for a while asked me to switch on A.C then switched it off & said that connecting bearing has gone Kaput. however i feel if connecting bearing had failed there would have been following symptoms while driving.
1. Loss in power - here there is no loss of power.
2. There would have been jerk while driving - No jerking reported
3. Car would have been halted frequently - not halted while driving

Tomorrow I am taking her to MASS lets see what they have to see about this.
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Old 28th March 2013, 11:35   #470
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Question Re: What's that sound ??

Hi All,

I am being plagued by a sound coming from my front brake(s) when braking at low speeds.

It started as a low sound when braking and used to come only at very low speeds - "Kaaarrr kaarrrr" or creaking noise (like when you sit on an old wooden chair!). After a regular service, it went away and I thought it was a cleaning/greasing issue.

But after a month, it again returned and after further 2 months, intensified so much that people around would look at me when I braked (again at low speeds) :-( This is when I took it to Pratham again and asked them to look at the issue. The supervisor said discs and/or pads may be worn and had tyres removed. He showed some marks and said there is "scoring" of both pads and discs. He then said problem can be solved only by changing both as a set. After being irritated with the noise for long, I agreed at cost of 4.5K.

Note that my car has run 50K and brake pads replaced had run for about 9K. Discs had not been replaced before (as far as I remember).

Not, just 2 weeks and 400 Kms after replacing both discs and pads, the same has started again!! on

Please please can someone help me with advising what the issue might be, before I go back to Pratham and get fleeced again unnecessarily.
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Old 28th March 2013, 12:07   #471
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Default Re: What's that sound ??

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Originally Posted by sonic View Post
Hi All,

I am being plagued by a sound coming from my front brake(s) when braking at low speeds.

It started as a low sound when braking and used to come only at very low speeds - "Kaaarrr kaarrrr" or creaking noise (like when you sit on an old wooden chair!). After a regular service, it went away and I thought it was a cleaning/greasing issue.

But after a month, it again returned and after further 2 months, intensified so much that people around would look at me when I braked (again at low speeds) :-( This is when I took it to Pratham again and asked them to look at the issue. The supervisor said discs and/or pads may be worn and had tyres removed. He showed some marks and said there is "scoring" of both pads and discs. He then said problem can be solved only by changing both as a set. After being irritated with the noise for long, I agreed at cost of 4.5K.

Note that my car has run 50K and brake pads replaced had run for about 9K. Discs had not been replaced before (as far as I remember).

Not, just 2 weeks and 400 Kms after replacing both discs and pads, the same has started again!! on

Please please can someone help me with advising what the issue might be, before I go back to Pratham and get fleeced again unnecessarily.
there could be something stuck in between your brake pad and disc (brake dust), give it a good pressure wash and check it out.
Another possibility is that when you came across the same problem before, and could visually see that both the pad and disc were scored, when the problem was rectified were the discs skimmed and refitted?
if not, then you've got the same problem that you had earlier, as the discs are harder to wear than the pads now that has caused scoring on the new pads too.
The best solution AFAIK is to have the Brake Discs skimmed at a machine shop (Lathe) and also have the brake pads sanded or roughened up (a light rub down on a flat rough surface will do).

Cheers
Saud
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Old 28th March 2013, 14:46   #472
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Default Re: What's that sound ??

Actually they changed both the disc and pads saying exactly what you said. That scored discs will soon impact pads too.

Now that both discs and pads are new, not sure why the sound. Are there any other aspects of the disc brake assembly that can fail and lead to this?
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Old 28th March 2013, 16:05   #473
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Default Re: What's that sound ??

Car: Maruti New WagonR, Sep 2011, 15K Kms.

I get some kind of hissing (sort of a long "ssssssssss...") sound when the car is in neutral (mostly after warmed up). The sound dissappears the moment clutch pedal is touched / when slotted to gear.

MASS denies existence of the sound and confused! What to do to diagnose?
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Old 28th March 2013, 21:24   #474
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Default

Mod Note : Please use the EDIT or MULTI-QUOTE buttons instead of typing one post after another on the SAME THREAD!.

To know how to multi-quote, click here (How to MULTI-QUOTE (when replying to a thread) on Team-BHP).

Quote:
Originally Posted by babu.sundaram View Post
Car: Maruti New WagonR, Sep 2011, 15K Kms.

I get some kind of hissing (sort of a long "ssssssssss...") sound when the car is in neutral (mostly after warmed up). The sound dissappears the moment clutch pedal is touched / when slotted to gear.

MASS denies existence of the sound and confused! What to do to diagnose?
That could be the clutch release bearing. no issues if the sound is not cabin intrusive and I don't think it will affect the cars performance.

Quote:
Originally Posted by sonic View Post
Actually they changed both the disc and pads saying exactly what you said. That scored discs will soon impact pads too.

Now that both discs and pads are new, not sure why the sound. Are there any other aspects of the disc brake assembly that can fail and lead to this?
I suspect your brake pads are glazed. it happends if the brake pads or discs are not good quality ones.

did you give the brakes a good pressure wash? its ok if you go all the way take off the wheels and use soap too.

Ok try this, get your car moving at about 30km/h in 2nd gear and while you accelerate push the brakes for about 10 seconds and then let off the brakes, the brakes will heat up and will need some time to cool off say about 30 seconds then repeat the braking under acceleration again for 10 seconds. This will heat the pad and Disc allowing the pads to get properly run in to the disc. After you return to your place let the car rest for about and hour, hose down the brakes brake dust should flow away now then take the car for a little ride and check if it worked.

if the noise worsened the brake pads are no good.

Another method is if you are a DIY guy, get the brake pads out give the pads and discs a good visual inspection and feel the discs if the grooves are consistent, check the calipers for rust and refit it all back with proper grease at the contact points and before you put in the pads give the pads a slight rub down in 600 grit sand paper, and of course you need to lay out the paper on a flat surface and then rub the pads on the paper.

EDIT: I'D ALSO SUGGEST THAT YOU GET THE BRAKE DISCS CHECKED, THEY COULD BE WARPED IF THEY WERE REPLACED WITH SUB STANDARD PARTS.

Quote:
Originally Posted by NPV View Post
Symptom:Heard mild screeching from tyres on normal slow speed braking this morning (when driving on a smooth road).
Car, Odo:Swift Dzire, has done about 37K Km

Could this be brake pads needing replacement or the tyre tread wearing out and needing replacement ?
(I'm planning on getting this checked during the 40K service, do let me know if I need to go earlier).
Hi NPV, I got your PM.
this screeching sound you say, are they like the tyres squeal like when the wheels lock up or the sound of metal to metal rubbing without lubrication?
I'm guessing the latter but was just bringing up the tyre squeal matter as you would mention it if so.

The typical life span of front brake pads in modern cars are about 40 to 50k sometimes 30k if the car is being used in ghat roads. If the sound is a little metallic, it could be the brake pads are almost over and its best you get them replaced with good quality ones after you get the brakes inspected at MASS and if things look like they will last another few 1000 kms then let them run out and you may change them during the periodical service of 40k.

you might have read in my earlier posts that i have been suggesting our fellow bhpians who come acroos abnormal sounds from brakes to give the brakes a good wash. Its because such abnormal sounds can be caused by accumulation of brake dust and since most of us are busy with our daily events we cant take the time to patiently sit and wash each wheel, we rather just wash the body dust the mats and drive away.
Its not a necessity to wash the wheels each time the car is washed as brake dust accumulation doesn't cause any mechanical problems, but as Bhpians we are people who care about our cars a little more than the general car users and call ourselves Bhpians with pride. A little abnormality in the behavior of our motor vehicle be it a Nano or a Bently or even an extra sound, will give us all the reasons to worry a bit more than the others. I mean i cant sleep until i find out whats wrong and what caused that sound, and my heart misses a beat every time my dad misses a speed breaker and drives over it at some speed. so yeah. splash a mug of water at your brakes and check if the sound comes back.

You could also take your car to some friendly Mechanic and have the pads checked for how much life remains in them and take his or her opinion. yes i said HER, i know of a woman who runs a workshop in my city. cool right?

Last edited by GTO : 29th March 2013 at 20:36. Reason: Please use the EDIT or MULTI-QUOTE buttons instead of typing one post after another!
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Old 31st March 2013, 11:38   #475
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Default Re: What's that sound ??

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Originally Posted by msaudf View Post
this screeching sound you say, are they like the tyres squeal like when the wheels lock up or the sound of metal to metal rubbing without lubrication?
I'm guessing the latter but was just bringing up the tyre squeal matter as you would mention it if so.
The sound is not of metal rubbing. It is just tyres squealing but I now also get a squeak sound quite frequently when I apply the brakes so I believe it could be the brake pads needing replacement soon.
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Old 31st March 2013, 21:46   #476
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Default Re: What's that sound ??

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The sound is not of metal rubbing. It is just tyres squealing but I now also get a squeak sound quite frequently when I apply the brakes so I believe it could be the brake pads needing replacement soon.
While braking do you feel the car pulling to any side or does it brake peoperly in a straight line?

Try to recreate the sound but this time hold the steering wheel with a little lesser grip and check if its pulling to any side.
Please check the alignment of the wheels, and do a tyre rotation. The rear tyres might have more thread than your front tyres. I'm not sure how long tyres last on Maruti Swifts but I'm guessing at 37k kms they may look tired.

And yes the brake pads of your car might be at the last stages of its lifespan as they've already done duty of 37k kms.

Last edited by msaudf : 31st March 2013 at 21:48.
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Old 31st March 2013, 22:29   #477
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Default Re: What's that sound ??

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Originally Posted by msaudf View Post
While braking do you feel the car pulling to any side or does it brake peoperly in a straight line?

Try to recreate the sound but this time hold the steering wheel with a little lesser grip and check if its pulling to any side.
Thanks. Will try this.
I don't believe it's an alignment/uneven wear & tear between front and rear tyres since I've always had them rotated every 5k Km so wear is even on all tyres.
However, looking at the tyres gives me the feeling that they may need replacement in the next 5-10k Km - no point risking this, so will get this done immediately post the 40k service.

I think the combination of brake pads & tyres should do the trick, so far I haven't had any other issues, I've just had the regular services done at the correct intervals

Last edited by NPV : 31st March 2013 at 22:31.
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Old 8th April 2013, 14:12   #478
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Default Re: What's that sound ??

Hi Guys,

I've a Sep '05 Santro Xing, clocked ~89,500kms.

I've been getting few weird noises that just won't go away even after service.

Sound 1 :
Metallic rattle from Front Left Wheel. The sound comes only when going over bumps/potholes(even small ones) at speeds over ~30kmph. If I slow down to 10-20kmph the sound does not come.
Shown to 3 different Hyundai service centers, & their diagnosis is loose bolts on suspension. They tighten the front suspension & sound goes away for 1-2 days & reappears.

Sound 2 :
This is a recent noise started after my 90k service few days back. Its a strange flapping kind of sound coming from the Right Side of the dashboard, which increases in intensity & frequency as the speed increases. The sound does not come when the vehicle is standing still & engine is revved. It comes only when the vehicle is moving. Shown to a local mechanic & he says its most probably from the speedometer cable gone bad. But the speedo functions fine!

I don't want to take it back to the service center that did the 90k service, 'coz of the apathetic attitude of the service adviser.

Would love to hear ideas/suggestions on what might be the culprit.
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Old 8th April 2013, 17:21   #479
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Default Re: What's that sound ??

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Originally Posted by kumar_gautam View Post
Hi Guys,

I've a Sep '05 Santro Xing, clocked ~89,500kms.

I've been getting few weird noises that just won't go away even after service.

Sound 1 :
Metallic rattle from Front Left Wheel. The sound comes only when going over bumps/potholes(even small ones) at speeds over ~30kmph. If I slow down to 10-20kmph the sound does not come.
Shown to 3 different Hyundai service centers, & their diagnosis is loose bolts on suspension. They tighten the front suspension & sound goes away for 1-2 days & reappears.

Sound 2 :
This is a recent noise started after my 90k service few days back. Its a strange flapping kind of sound coming from the Right Side of the dashboard, which increases in intensity & frequency as the speed increases. The sound does not come when the vehicle is standing still & engine is revved. It comes only when the vehicle is moving. Shown to a local mechanic & he says its most probably from the speedometer cable gone bad. But the speedo functions fine!

I don't want to take it back to the service center that did the 90k service, 'coz of the apathetic attitude of the service adviser.

Would love to hear ideas/suggestions on what might be the culprit.
For sound 1,thoroughly check the following:

1. Tie-rod
2. CV joints
3. Strut braces
4. Lower Arm
5. BRAKE ASSEMBLY
6. If your car wears fancy wheel caps, open them to see if stones have been trapped there.

For sound 2, check if the service guys have over inflated your tires. The sound that you are describing may be coming from the dashboard, things kept in it and other fitting under the dashboard due to harsh ride. Over-inflated tires cause rough & harsh rides and things that I described above can rattle even without being lose. If tyre pressure is fine, check for lose cables or other fixtures like fuse-box etc hitting against things like steering column. Open the fuse box & check if any fuse has fallen off from its slot into the box & making that noise.

Get the above checked & let us know.

Regards,
Saket

Last edited by saket77 : 8th April 2013 at 17:25.
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Old 8th April 2013, 17:30   #480
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Default Re: What's that sound ??

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For sound 1,thoroughly
=======
Regards,
Saket
Hi Saket.

Thanks for the quick reply & checkpoints.

For Sound 1 : Seems like a day's job to get the checks done! Will try to get it done over the weekend & update.

For Sound 2 : Tires are at the right pressure. I keep them at 30psi. I don't keep anything on the dashboard or even in the nooks under the it!

Should have mentioned the flapping sound is persistent over any kind of road - flat, mild bumps, or major potholes. Though after the first start in the morning, it takes ~5-10 mins of driving for the sound to start. Checked around the web, & found that some posts attribute it to a botched A/C blower cleaning job. The A/C cleaning was done at the 90k service. Again will be getting it checked over the weekend, since the entire dashboard has to be opened & taken apart!!

Thanks a lot again!
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