check runout - could be warped disks.
uvvafink is a broked abs ring.
sierrafery
Well-Known Member
is it different than when the ABS kicks in?
Been out and looked at the discs, I don't have a dti but as I turned the hub nut with a brace bar I could see a slight movement towards the caliper edge on the drivers side of a couple of mm and also a similar amount if not more on the nearside. I also checked the servo operation as per the Haynes manual instructions and this was fine.
Do you think a couple of mm is enough to cause the pedal to judder?
When the abs kicks in it usually makes a whirring kind of noise from the modulator like when you lose traction in mud, it is not making any noise just a juddering pedal.
Do you think a couple of mm is enough to cause the pedal to judder?
When the abs kicks in it usually makes a whirring kind of noise from the modulator like when you lose traction in mud, it is not making any noise just a juddering pedal.
sierrafery
Well-Known Member
afaik warped discs should give you shudder in the steering wheel while brakeing
biketeacherdave
Well-Known Member
Warped disc
markomate2
Well-Known Member
Posted here before that I dont think discs warp ! Ill add "usually"
Check your pads are not binding and that they are evenly worn, it could be a sign of sticking pads, they drag on the discs and deposit a layer of material that can cause juddering, but its usually makes the steering wheel wobble not the brake pedal to pulse.
My cure for my juddering brakes, and they were bad, was new pads, clean the calipers properly, then on an empty road do at least three hard stops from 50mph to zero, it cleans all the crud of the discs.
As has been said before, pads and discs are dirt cheap.
Mark
Check your pads are not binding and that they are evenly worn, it could be a sign of sticking pads, they drag on the discs and deposit a layer of material that can cause juddering, but its usually makes the steering wheel wobble not the brake pedal to pulse.
My cure for my juddering brakes, and they were bad, was new pads, clean the calipers properly, then on an empty road do at least three hard stops from 50mph to zero, it cleans all the crud of the discs.
As has been said before, pads and discs are dirt cheap.
Mark
gemsdad
NOT BOTHERED.
Mark,the op said he can see the discs not running true,so that is why it was suggested it was the discs causing the problem.
markomate2
Well-Known Member
Sorry I wasnt questioning your advice, its very difficult to disc run out without a DTI, discs "wobble" very slightly on the hub bearings so its sometimes difficult to tell if the disc is warped or not.
I think Ill bow out of this one though!
Mark
I think Ill bow out of this one though!
Mark
gemsdad
NOT BOTHERED.
Mark,no need to leave the thread,your input is just as valid as mine,or anyone else's.
biggeeeee
Retired - Living the dream
gemsdad
NOT BOTHERED.
Sorry,i apologise profusely.Not quite anyone's surely!
Know what I mean
gemsdad
NOT BOTHERED.
Please don't say that.He is normally around by now, what with the time difference and all that
,might be pension day,so he can go out for his monthly treat meal,big mac and a coke.
wattfield
AKA Dirk Diggler
Supersize.Please don't say that.
