Automatic transmission brake noise

Roberto_gas

Lads,

Looking to get an automatic hyundai accent. During my test drive i observed that when i press brake pedal to change gear to R or D from P and release to move there is a big metal to metal voice on both cases. Happens only if i press break fully. Does not happen for any other gears like N.

Is this normal for an automatic ? Or there may be apparant issues ?

https://youtu.be/8Kk6iBNVVc4. Link for the issue. Hear from 14 seconds onwards..

Thanks in advance.

Tropheus

It sounds more like the brakes slipping slightly than the gearbox. Are you sure the handbrake wasn't on as it's like the sound you get on a hill if you don't pull up the handbrake tight enough and the car starts to move slightly as the pads aren't tight enough on the disks.

If you think for a second it's the gearbox, run away. Putting an auto gearbox right is big money.

Alanstrainor

Have you ever driven an automatic before? Nothing sounds wrong to me there. The car will creep when in gear, that is to say that it will drive the car forward at a slow speed(or backward for that matter). So when you slowly lift off the brake pedal the car is trying to move forward, and it is making noise as you come off the brake. In normal driving you will generally just come completely off the brake rather than slowly doing so as in this video.

EDIT: Does the car brake fine otherwise? Any noise when slowing to a stop? Does it pull the steering one way or the other under braking?

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Alanstrainor

Prisoner 6753 wrote: »

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Was this in a Hyundai Accent automatic? I just fail to see how this is relevant if the car was something completely different. Who knows what caused your friends issue...

Roberto_gas

Alanstrainor wrote:

EDIT: Does the car brake fine otherwise? Any noise when slowing to a stop? Does it pull the steering one way or the other under braking?

You are right. I am driving automatic first time....there is some noise when i brake hard to stop as well on D. Issue only happens when I break slowly...if i do it quickly no sound. No sound in Neutral either.

Car brakes fine while driving...hence i asked if i was doing the right thing...no other issues whatsoever...drives like charm.

Roberto_gas

Tropheus wrote:

It sounds more like the brakes slipping slightly than the gearbox. Are you sure the handbrake wasn't on as it's like the sound you get on a hill if you don't pull up the handbrake tight enough and the car starts to move slightly as the pads aren't tight enough on the disks.

Nopes no handbrake on.

mickdw

That sounds fecked to me.

Alanstrainor

Just went out to my own small car automatic. Nissan Note. This is the noise mine makes:

https://www.youtube.com/watch?v=dLG4kz3AHfQ

Very similar. No issues with mine, this is just the noise you hear when you put it in drive and start to lift off the brake slowly. Car pulls against the brakes. It's especially loud in these style cars because they're small and have little sound deadening.

OP, you'd be best advised to drive other cars anyway to get a feel for them.

Roberto_gas

Alanstrainor wrote:

Very similar. No issues with mine, this is just the noise you hear when you put it in drive and start to lift off the brake slowly. Car pulls against the brakes. It's especially loud in these style cars because they're small and have little sound deadening.

Thanks for that !! That is the same sound i was getting....same thing happens in reverse as well ?

This is what I got -

https://youtu.be/nlYtaXEk5SA

Alanstrainor

Mine did not make the noise in reverse. But I wouldn't over think it tbh. Mine was also reversing up hill and barely moving. Also mine has rear drums and not discs which might affect things.

I presume when driving it makes no funny noises? Does it accelerate okay? Have you floored it? Really when buying a car you should bring someone who knows a thing or two with you, or ask a mechanic to take a look.

Roberto_gas

Alanstrainor wrote:

I presume when driving it makes no funny noises? Does it accelerate okay? Have you floored it? Really when buying a car you should bring someone who knows a thing or two with you, or ask a mechanic to take a look.

No other noises whatsoever...gearshifting seamless, acceleration pretty good..Its being sold by a reputed dealer and i am told its normal for an automatic....just wanted to get views up here... i like it and might get it..

Toyotafanboi

I didn't make a YouTube video but my car sounds similar too if I put it in D and take my foot off the brake with the handbrake left on.

Roberto_gas

Toyotafanboi wrote:

I didn't make a YouTube video but my car sounds similar too if I put it in D and take my foot off the brake with the handbrake left on.

Thanks This is a bit different...sound is coming while releasing the foot brake slowly..


But looks like its a common behaviour for automatics...

Toyotafanboi

Yeah I'd get that noise in that scenario too. As Alan said the engine is fighting the brakes to pull away so if the pedal isn't very firmly pressed it will groan like that.

Roberto_gas

Toyotafanboi wrote:

Yeah I'd get that noise in that scenario too. As Alan said the engine is fighting the brakes to pull away so if the pedal isn't very firmly pressed it will groan like that.

But do you get sound while pressing the break fully as well ?

Alanstrainor

Roberto_gas wrote: »

But do you get sound while pressing the break fully as well ?

No. If the brake is fully pressed then the car will go nowhere and there will be no noise. Which is exactly what you have posted in both of your videos. There is no issue here man, you just aren't familiar with automatics. Like I said you would be best advised to try some more automatic cars before buying anything, it'll allow you to get a better feel for them and to tell if there's any issue with this car.

Roberto_gas

Alanstrainor wrote:

No. If the brake is fully pressed then the car will go nowhere and there will be no noise. Which is exactly what you have posted in both of your videos. There is no issue here man, you just aren't familiar with automatics. Like I said you would be best advised to try some more automatic cars before buying anything, it'll allow you to get a better feel for them and to tell if there's any issue with this car.

Thanks thats comforting...its my ignorance all along !!

colm_mcm

It does sound like rear drum brake noise. I wouldn’t be certain there isn’t an issue there, but if there is it’s brakes and not transmission.