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Omega Help Area => Omega General Help => Topic started by: raywilb on 30 July 2018, 16:26:03

Title: shudder whilst breaking
Post by: raywilb on 30 July 2018, 16:26:03
whenever I touch the brakes at any kind of speed above 30mph there is a shudder felt through steering wheel. the brakes were checked by a local garage & deemed to be ok. however the wishbones have a slight play in the bushes on both sides. so put it down to them. it has 10 mths mot on it so worth getting a pair. but where from ? :-\ 
Title: Re: shudder whilst breaking
Post by: tigers_gonads on 30 July 2018, 17:06:19
whenever I touch the brakes at any kind of speed above 30mph there is a shudder felt through steering wheel. the brakes were checked by a local garage & deemed to be ok. however the wishbones have a slight play in the bushes on both sides. so put it down to them. it has 10 mths mot on it so worth getting a pair. but where from ? :-\



Worn wishbones don't make your brakes shudder imo.
Symptoms more like a violent knock or pulling in one direction or another  :-\

If its a judder, i'd be looking at something loose or warped around the disc's or callipers  :y
Title: Re: shudder whilst breaking
Post by: raywilb on 30 July 2018, 17:46:59
the brakes were checked . the shudder is not too bad , but there . it seems to be touch brakes ( they pull up ok } & shudder is more on the steering column.
Title: Re: shudder whilst breaking
Post by: MonzaGSE on 30 July 2018, 20:31:51
I agree with tigers. Ime worn wishbone bushes dont cause shuddering of the wheel. More like sharp pulls sideways when braking/cornering. If it was me i would change the brake discs and pads even though someone checked them. If that dont help i would check wheel balancing.
Title: Re: shudder whilst breaking
Post by: Jan Suhr on 30 July 2018, 22:12:37
I would guess that the backside of the discs are worn and rusty and makes it brake uneven. Even though outside of the rotors look good doesn't necessary means that the back side is good.
To get a good judgement on the brakes you have to take the calipers off and look at the discs back side. I doubt that your guy did that.


Title: Re: shudder whilst breaking
Post by: Bigron on 30 July 2018, 22:51:40
Ray, do you brake firmly and then, once stopped hold the car on the footbrake, rather than go into neutral and apply the handbrake?

Ron.
Title: Re: shudder whilst breaking
Post by: Alnico Blue on 31 July 2018, 06:33:09
Had this on an XJ8  . . .warped disc.    New discs sorted it instantly 
Title: Re: shudder whilst breaking
Post by: Bigron on 31 July 2018, 11:24:00
Exactly what I was suggesting, Mr. Blue - holding the car on the footbrake when the discs are warm/hot causes them to warp, as differential cooling takes place and they buckle! :(

Ron.
Title: Re: shudder whilst breaking
Post by: Marks DTM Calib on 31 July 2018, 12:16:44
Worn bushes can cause a shudder, seen it a few times.......as the toe goes out due to the worn bush the theory goes that the tyre gets some side load which when released (as the tread skips)
Title: Re: shudder whilst breaking
Post by: TheBoy on 31 July 2018, 18:14:02
Worn bushes defo can cause a shudder, like a warped disc - anyone who drove the Pussy when I first got it will testify :D - but IME, its not as consistent as a warped disc.

But if you have play in the bushes, that certainly needs to be fixed first.
Title: Re: shudder whilst breaking
Post by: Andy B on 31 July 2018, 22:47:43
Ray, do you brake firmly and then, once stopped hold the car on the footbrake, rather than go into neutral and apply the handbrake?

Ron.

The person that does that though is very few & far between.  ;)
Title: Re: shudder whilst breaking
Post by: neil74 on 01 August 2018, 00:19:26
Mine does shudder a little when braking from speed so it probably needs new discs too. and bushes etc etc...
Title: Re: shudder whilst breaking
Post by: tunnie on 01 August 2018, 09:40:58
Ray, do you brake firmly and then, once stopped hold the car on the footbrake, rather than go into neutral and apply the handbrake?

Ron.

The person that does that though is very few & far between.  ;)

I tend to do that, as lights heading out of work can be quite long. Gets quite tiring holding foot brake  :D

Although I don't put on the handbrake, just pop it in N. Flick to D when we get to go.  :)
Title: Re: shudder whilst breaking
Post by: raywilb on 01 August 2018, 09:53:54
Ray, do you brake firmly and then, once stopped hold the car on the footbrake, rather than go into neutral and apply the handbrake?

Ron.
I never slam down on the brake & I usually go into neutral and apply handbrake.
Title: Re: shudder whilst breaking
Post by: raywilb on 01 August 2018, 09:55:49
Worn bushes can cause a shudder, seen it a few times.......as the toe goes out due to the worn bush the theory goes that the tyre gets some side load which when released (as the tread skips)
that's what I am tending to put it down to
Title: Re: shudder whilst breaking
Post by: dave the builder on 01 August 2018, 11:42:35
A DTI (dial test indicator) mounted and rotation of the disc would point to how much the disc or wheel bearing deviates from true, which is what I would do first.
plus, check the caliper guides for play and wear,
and check all suspension components for excessive play anyway