Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: bob.dent on 19 September 2008, 10:58:21

Title: Rumbling brakes
Post by: bob.dent on 19 September 2008, 10:58:21
When braking quite heavily from fairly high speed, I've started getting a kind of rumbling noise from my brakes combined with a bit of brake fade. There's no warning coming up that the brake pads are worn but they haven't been changed since I've had the car so they probably haven't been changed for a good couple of years.

Could this mean the pads just want changing or could it be something else?
Title: Re: Rumbling brakes
Post by: feeutfo on 19 September 2008, 11:53:40
got to be worth checking pads as first port of call. Do you know for sure that the wear sensors are connected?
Title: Re: Rumbling brakes
Post by: bob.dent on 19 September 2008, 11:55:00
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got to be worth checking pads as first port of call. Do you know for sure that the wear sensors are connected?

TBH I don't know for sure but I think I'll book it in for a check anyway.
Title: Re: Rumbling brakes
Post by: cem_devecioglu on 19 September 2008, 12:03:14
Discs are also worth checking I think..They may be warped..
Title: Re: Rumbling brakes
Post by: bob.dent on 19 September 2008, 12:09:19
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Discs are also worth checking I think..They may be warped..

Don't think the discs are warped as there's no wobble on the pedal when breaking. :-/
Title: Re: Rumbling brakes
Post by: Hoffi on 19 September 2008, 12:10:06
Sounds to me as if the disks are on the verge of life.

What you experienced happens when the heat cant't be taken away from the brakes properly, especially on the front as they are taking the most of the force when braking.
So either when your discs are new they might be dodgy ones or they are almost gone. Except there is a generell overheating problem with the Omegas?!?
As just seen the other comments: The whobbling pedal would come after some of that braking action as a result that the disks would deform through the quite enourmous heat that is developed.

Having them checked would have been my recommendation too! When there is a noise NEVER rely on your sensors!!!!
Title: Re: Rumbling brakes
Post by: bob.dent on 19 September 2008, 12:19:11
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Sounds to me as if the disks are on the verge of life.

What you experienced happens when the heat cant't be taken away from the brakes properly, especially on the front as they are taking the most of the force when braking.
So either when your discs are new they might be dodgy ones or they are almost gone.

Having them checked would have been my recommendation too!

That makes sense - I just spoke to my mechanic and he agreed, so it's booked in for next week for a check. :y
Title: Re: Rumbling brakes
Post by: omegaman2 on 19 September 2008, 12:49:40
at my last mot an advisory on discs was isued no wear could be seen through the alloy wheels but the wear was on the inner side of the discs  and the feeling you are getting is the one ia getting now under heavy braking  so new discs and opads are going on next pay day
Title: Re: Rumbling brakes
Post by: Markie on 19 September 2008, 13:14:47
Come on Bob, the speed you drive at ( i`ve been a passenger remember) get yer wallet open and spanners out.

Change of discs and pads all round if they havent been done in 2 years  :y ;D
Title: Re: Rumbling brakes
Post by: cem_devecioglu on 19 September 2008, 13:15:52
if you make any change on the pads and discs dont forget to  drive slowly as the surfaces need to match..
Title: Re: Rumbling brakes
Post by: bob.dent on 19 September 2008, 13:21:31
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Come on Bob, the speed you drive at ( i`ve been a passenger remember) get yer wallet open and spanners out.

Change of discs and pads all round if they havent been done in 2 years  :y ;D

Ah, that was purely for demonstration purposes!! ::) ;D

Yep, I'm pretty sure new discs and pads will be going on next week. :y

Title: Re: Rumbling brakes
Post by: bob.dent on 19 September 2008, 13:22:50
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if you make any change on the pads and discs dont forget to  drive slowly as the surfaces need to match..

Thanks Cem, I always do take it easy for a few days when new discs or pads are fitted. :y
Title: Re: Rumbling brakes
Post by: dbug on 19 September 2008, 14:31:47
Thin (worn) disks & knackered pads = poor heat dissipation
Title: Re: Rumbling brakes
Post by: jb on 22 September 2008, 10:49:14
worth checking your front caliper sliders for seizure
Title: Re: Rumbling brakes
Post by: Entwood on 22 September 2008, 11:00:44
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if you make any change on the pads and discs dont forget to  drive slowly as the surfaces need to match..


I would tend to disagree with the broadness of this statement .. :( it is correct for the initial period, but a tad more needs to be done ...

Interesting article on "bedding in" of brakes can be found here ..

http://www.powerbrake.co.za/tech_info/tech_02_bedin.htm

HTH  :)



Title: Re: Rumbling brakes
Post by: ians on 22 September 2008, 14:10:52
Bob - I have had similar on 2 Omegas after descending a long hill (passes in the Lake District).   Don't ignore the rear pads too (they don't have sensors).   They are dead cheap and easy job to do;)
Title: Re: Rumbling brakes
Post by: bob.dent on 23 September 2008, 15:37:11
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Bob - I have had similar on 2 Omegas after descending a long hill (passes in the Lake District).   Don't ignore the rear pads too (they don't have sensors).   They are dead cheap and easy job to do;)

Not when you're mechanically inept like me! :-[
Title: Re: Rumbling brakes
Post by: Andy B on 23 September 2008, 15:53:32
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.....

Not when you're mechanically inept like me! :-[

Even my brother managed to change the pads on his FTO - similar set up - They're easy Bob, get them done yourself! :y  :y  :y
Title: Re: Rumbling brakes
Post by: bob.dent on 23 September 2008, 17:23:53
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Quote
.....

Not when you're mechanically inept like me! :-[

Even my brother managed to change the pads on his FTO - similar set up - They're easy Bob, get them done yourself! :y  :y  :y

Apart from knowing very little about car mechanics, I don't have the necessary tools or anywhere to work on the car as I live in a flat and my parking bay is underground with little light. TBH, I don't get the time either, but my garage is very good and quite reasonable. :y
Title: Re: Rumbling brakes
Post by: Lizzie_Zoom on 23 September 2008, 17:37:43
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Bob - I have had similar on 2 Omegas after descending a long hill (passes in the Lake District).   Don't ignore the rear pads too (they don't have sensors).   They are dead cheap and easy job to do;)


That one coming down from its peak of 1500ft above sea level (Kirkstine Pass??)Ian, just outside Windermear?? :-/ :-/

Yes what a bugger when you are coming down, putting your brakes under great pressure.  At one stage last week I managed to hit my near side mirror of a wall jutting out to avoid traffic coming towards me; fortunately no permanent damage, but I would hate to lose my brakes on that one! :o :o :o :o :o :o

For anyone going to The Lakes; please ensure your brakes are 110%!! ;D ;D ;) ;) ;)