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grinding noise with abs braking and stability control


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19 replies to this topic

#1 OFFLINE   apilon50

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Posted 28 January 2015 - 10:26 AM

Good morning 

 

my car is a fusion hybride 2013, I have noticed that everytime the abs breaking is kicking in like when i am on a icy road  the system make a hell of a grinding noise .........The same apply when the stability control activate, i hear a grinding noise. My dealer is telling me that it is normal  but i tested the same condition with my honda odyssey and there is some noice with the abs but non with the stability control 

 

 

So is it normal for the fusion to make that grinding noise ??

 

 

Alain 

 

 

 


Alain Pilon 

 

 

 

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#2 OFFLINE   Easy Rider

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Posted 28 January 2015 - 11:26 AM

 

my car is a fusion hybride 2013, I have noticed that everytime the abs breaking is kicking in like when i am on a icy road  the system make a hell of a grinding noise ........

 

 

It is common for most ABS systems to sound like that; all that I've ever experienced and I've driven a LOT of different cars, trucks and vans for a car rental company.

 

I am more surprised that your Honda does NOT make a noise similar to that and would be concerned that the ABS system on it is not working properly.



#3 OFFLINE   GrySql

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Posted 28 January 2015 - 11:40 AM

Did your Dealer check all 4 wheel's brake pads and rotors for even wear? 

There have been reports of debris/ice blocking the brake calipers and sticking brake pads in very cold weather and icy conditions.


Edited by GrySql, 28 January 2015 - 11:41 AM.

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#4 OFFLINE   acdii

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Posted 28 January 2015 - 02:12 PM

Yeah, ABS can be loud, depends on where the pump is located. If mounted on the firewall that can be transmitted into the cabin. The Fusion Hybrid however is not anything like your Honda, the systems are totally different in how they function since Hybrids have a different means of activating them.  The honda uses vacuum as the boost, the FFH uses a pump, which there is a thread around somewhere about a noise heard which was though to be the shutter motor but is actually the brake boost pump. When ABS kicks in it would most likely use both the boost pump and ABS pump. 


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#5 OFFLINE   Texasota

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Posted 28 January 2015 - 02:40 PM

 So is it normal for the fusion to make that grinding noise ??

 

Mine makes unpleasant noises also.  I think every car I have owned that had ABS made similar noises.  This is from the FFH owner's manual:

 

 

HINTS ON DRIVING WITH ANTI-LOCK BRAKES
Note:When the system is operating, the brake pedal will pulse and may travel further. Maintain pressure on the brake pedal. You may also hear a noise from the system. This is normal. The anti-lock braking system will not eliminate the risks when:
• You drive too closely to the vehicle in front of you.
• Your vehicle is hydroplaning.
• You take corners too fast.
• The road surface is poor.


Edited by Texasota, 28 January 2015 - 02:41 PM.

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#6 OFFLINE   GrySql

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Posted 28 January 2015 - 10:41 PM

The OP used the words 'grinding noise'.

Maybe we're in a word or descriptive misunderstanding here.  When I see the word 'grinding' I think of metal on metal noises, or similar.

 

The ABS does make noise and it is because of the two different pumps that are in use.

Some noise from the system and pulsations in the brake pedal are normal conditions during most ABS and stability control events.

I can't find anything in Manual about the ABS system as having a 'grinding' noise.

The high pressure pump can be heard clearly if your car is park, like in a garage, and you depress the brake pedal - it makes a rapid and noticeable buzzing sound.

The hydraulic control unit jumps in if a severe braking event is in progress.

-

I do find the word 'grinding' here and as we know the eCVT stops the car most of the time:

TSB 14-0214

HF35 TRANSMISSION - THUMPING/RUBBING OR GRINDING NOISE


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#7 OFFLINE   Texasota

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Posted 28 January 2015 - 11:09 PM

The ABS in my 2012 Focus and 2002 GMC Sierra made noise that I would describe as grinding. It was very disconcerting the first time you heard it.



#8 OFFLINE   GrySql

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Posted 29 January 2015 - 12:10 AM

My weather here doesn't put that kind of stress on my cars so I'll leave it to the winter experts. 

I've never heard grinding during an ABS event on any car I've owned, including the ones I have now.


Edited by GrySql, 29 January 2015 - 11:55 AM.

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#9 OFFLINE   Easy Rider

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Posted 29 January 2015 - 10:02 AM

 

Maybe we're in a word or descriptive misunderstanding here.  When I see the word 'grinding' I think of metal on metal noises, or similar.

 

The ABS does make noise and it is because of the two different pumps that are in use.

 

 

During an ABS "event" the loud chattering noise is due to the action of pulsating the brake mechanisms 10 times a second or 100 times a second or whatever.

It can sound like badly worn brakes and "grinding" is not an inaccurate description of the noise.



#10 OFFLINE   GrySql

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Posted 29 January 2015 - 11:23 AM

Let me be a little clearer, I've felt the ABS in an icy condition and I am fully aware of the effect, the shuttering and noise. 

I understand the mechanical and hydraulic process.  I guess the word grinding captured too much of the OP's meaning to my mind.

 

For peace of mind I'd still check for uneven wear on the pads and rotors, safety first.


Edited by GrySql, 29 January 2015 - 12:00 PM.

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#11 OFFLINE   Easy Rider

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Posted 29 January 2015 - 08:06 PM

The word "grinding" actually refers to grinding grain (or other things), corn and wheat mostly, and for those few who have heard that, ABS activation sounds a lot like it. 

;)


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#12 OFFLINE   gkinla

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Posted 29 January 2015 - 08:42 PM

For me the term, pulsing, is what describes the noise and feeling of the ABS during operation


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#13 OFFLINE   GrySql

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Posted 29 January 2015 - 09:44 PM

The word "grinding" actually refers to grinding grain (or other things), corn and wheat mostly

I thought we were discussing automobiles, not horticulture.

----

FTA:

Brake Grinding

Brake grinding is always a serious problem, and should be dealt with immediately. There are 2 major causes of brake grinding. When your brakes are making a loud grinding sound when you press on the pedal, this is almost always caused by contact of the rotor disc with part of the caliper. This is usually because of extreme wear to the brake pads or rotors. If you wait until your brakes grind before servicing them, you'll be in a worse situation. They will require a much more expensive repair. Another reason that brakes may make a grinding sound is when a foreign object (such as a stone) gets lodged somewhere in the caliper. When this happens, the brakes will usually make a consistent grinding or screeching sound when the vehicle is in motion. You can try to work the object free yourself by moving the car forward and backward repeatedly in a safe place, but if that doesn't remedy the problem, you're going to have to have the brakes serviced. A foreign object in the brake mechanism can cause expensive damage.


Edited by GrySql, 29 January 2015 - 09:46 PM.

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#14 OFFLINE   Texasota

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Posted 29 January 2015 - 10:12 PM

The noise and pulsating feedback on the brake pedal is likely perceived differently by drivers.  We may be over analyzing the adjectives to describe it.


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#15 OFFLINE   GrySql

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Posted 29 January 2015 - 10:18 PM

We may be over analyzing the adjectives to describe it.

Sure, I agree.

 

Ford has a test for NVH (noise, vibration and harshness) and unless the the Service Department took the car out and tested it in similar conditions there can be no definitive answer for the OP's question.

Passing off something a customer has not hear before by saying "Oh, that's normal" is sketchy service.  It is possible that what is happening in that particular vehicle isn't normal.

The diagnosis and correction of NVH symptoms requires:

  • A road or system test to determine the exact nature of the symptom.
  • An analysis of the possible causes.
  • Testing to verify the cause.
  • Repairing any symptoms found.
  • A road test or system test to make sure the cause has been corrected or brought back to within acceptable range.

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#16 OFFLINE   acdii

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Posted 30 January 2015 - 09:38 AM

If it truly were brake grinding, it would happen every time service brakes are applied, not just when ABS kicks in. In fact if brakes are grinding, you would hear less of it under ABS conditions.


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#17 OFFLINE   Easy Rider

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Posted 30 January 2015 - 12:39 PM

In fact if brakes are grinding, you would hear less of it under ABS conditions.

I highly doubt that.

The combination of grinding rotors AND the growl/grind/buzz of the ABS might make a truly horrible noise.



#18 OFFLINE   acdii

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Posted 30 January 2015 - 05:55 PM

No, there is less grinding since the pads aren't forced against the rotors as hard, it would make a stuttering chattering grinding sound, completely different than the normal grinding they make when slowing. Not a good thing either, will cause damage to the calipers if its that far gone.  The grinding will be softer in sound, provided of course the wheels didnt totally lock at that point.


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#19 OFFLINE   GrySql

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Posted 30 January 2015 - 06:11 PM

The ABS controller reduces the pressure to each brake until it sees an acceleration, then it increases the pressure until it sees the deceleration again.

It can do this very quickly, before the tire can actually significantly change speed.

The result is that the tire slows down at the same rate as the car, with the brakes keeping the tires very near the point at which they will start to lock up.


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#20 OFFLINE   FordServiceCA

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Posted 20 February 2015 - 01:05 PM

Good morning 

 

my car is a fusion hybride 2013, I have noticed that everytime the abs breaking is kicking in like when i am on a icy road  the system make a hell of a grinding noise .........The same apply when the stability control activate, i hear a grinding noise. My dealer is telling me that it is normal  but i tested the same condition with my honda odyssey and there is some noice with the abs but non with the stability control 

 

 

So is it normal for the fusion to make that grinding noise ??

 

 

Alain 

 

 

 

 

Hey Alain, 

 

Let me help! Have you been to your dealer for this? Send over your current odometer reading and preferred dealer, along with status and dealer diagnosis, if available; I'll check out available resources on my end.

 

Also. I noticed you're writing in from Québec. I'm able to assist you in French, if you'd like.  :)

 

Nikki

Ford Service CA






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