Juddering under braking and clicking noise when turning right

geekman

geekman

geekman

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Not even sure if these two issues are related, but would be interested to find out any possible causes.

I had new Delphi brake disks and pads fitted a few months back, which were fine for a month or so, then began juddering under braking. I took it back to the garage, who replaced them with Brembos as they said the original disks were warped. However, these new disks also developed the same problem after a couple of months, and now I'm not in the same country, I can't go back to the garage.

The juddering is barely noticeable in normal driving, but when braking from 70MPH+ it's extremely obvious. I've also noticed a clicking sound which is particularly pronounced when turning right, less so when the wheel is straight, and completely disappears when turning left. You can't hear it at all with the windows up, but it's very obvious when the windows are down.

Any ideas what could cause this? I'm currently leaning towards replacing the disks and pads again with EBC items, along with all 4 wheel bearings, as it's a cheap and easy job, but would rather not spend the money if it won't solve it.
 
Was reading another thread with similar things and it was down to pads leaving a deposit on the discs, which is why replacing discs resolved it briefly.
 
It's likely to be pad deposits on the disc(s). This is most commonly caused by keeping the new pads pressed against the discs after coming to a stop when everything is hot (e.g. Several hard stops in quick succession and then waiting at a set of traffic lights with your foot on the brake pedal). Sometimes the deposits will clean themselves over time. I've had limited success by braking very hard enough to kick in the ABS from 70mph to a stop a few times in quick succession, then drive about gently for 20 minutes without touching the brakes so everything cools down gently. For safety reasons, find an empty road as you might get brake fade after a few stops and you don't want to run into anyone/anything.

If this doesn't work, then find a garage that does brake skimming with the discs on the car. Takes about 90 minutes and will cost about £70 per axle (might only need the fronts done). Afterwards bed in the discs and pads according to manufacturers instructions and hopefully enjoy smooth braking without the expense of new discs and pads all round.
 
Forgot to mention, when I jet wash the wheel/brake area, the noise disappears for about 15 minutes, but the juddering remains. Would that point to anything in particular?
 
Have you checked for the calipers slightly sticking ? After a drive the brakes should be roughly the same temperature.

Sticking caliper could cause a build up of brake pad deposits on the disc which can cause juddering.
 
Dangerous Dave said:
Have you checked for the calipers slightly sticking ? After a drive the brakes should be roughly the same temperature.

Sticking caliper could cause a build up of brake pad deposits on the disc which can cause juddering.
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Yeah this happened to mine a few weeks back. It was fine after the mechanic cleaned it.
 
geekman said:
Not even sure if these two issues are related, but would be interested to find out any possible causes.

I had new Delphi brake disks and pads fitted a few months back, which were fine for a month or so, then began juddering under braking. I took it back to the garage, who replaced them with Brembos as they said the original disks were warped. However, these new disks also developed the same problem after a couple of months, and now I'm not in the same country, I can't go back to the garage.

The juddering is barely noticeable in normal driving, but when braking from 70MPH+ it's extremely obvious. I've also noticed a clicking sound which is particularly pronounced when turning right, less so when the wheel is straight, and completely disappears when turning left. You can't hear it at all with the windows up, but it's very obvious when the windows are down.

Any ideas what could cause this? I'm currently leaning towards replacing the disks and pads again with EBC items, along with all 4 wheel bearings, as it's a cheap and easy job, but would rather not spend the money if it won't solve it.
Click to expand...

rather you could ask the garage to grease the screws and near the brake. maybe those stick when braking hence making noises. as to the clicking when turning right, i do not know if its related.
hope this helps
 
Thanks everyone. I'm tempted for easiness (don't know any decent garages around here) to just replace disks and pads, and get all 4 callipers refurbed if we think that will definitely solve it?
 
So, I replaced front callipers, disks and pads and it seems to have cured the clicking noise, and reduced the vibration under braking by about 50%. Reckon it's worth doing the rears in the hope that'll totally solve it or look at other things first?
 
Could be a CV joint/driveshaft.

Did they check the drive flanges for trueness/runout? Or check the disc for runout once replaced?
 
Usually new discs only go bad when they are either a) Not bedded in properly or b) There is something wrong with the contact surface (hub). If the hub is not properly cleaned than a new discs can be put on at an ever so slight angle, replace the discs as many times as you like, but if there is an underlying issue then it will continue to be a problem.
 
geekman said:
So, I replaced front callipers, disks and pads and it seems to have cured the clicking noise, and reduced the vibration under braking by about 50%. Reckon it's worth doing the rears in the hope that'll totally solve it or look at other things first?
Click to expand...

Have you tried going down a deserted open road, putting in neutral at 30mph then applying handbrake? Not jam it on but maybe 2or 3 clicks to see if the judderingcan be felt?

If ok then it's definitely the front and sounds like driveshafts or CV joints? It would be something that rotates so unlikely to be bushes?
 
ov_sjo said:
Could be a CV joint/driveshaft.

Did they check the drive flanges for trueness/runout? Or check the disc for runout once replaced?
Click to expand...

I asked him to check to see if there were any other potential causes of the problem and he told me he didn't find anything wrong, although I can't say I have a huge amount of confidence in his abilities. Not much choice mechanic-wise where I am unfortunately.

EliotG said:
Usually new discs only go bad when they are either a) Not bedded in properly or b) There is something wrong with the contact surface (hub). If the hub is not properly cleaned than a new discs can be put on at an ever so slight angle, replace the discs as many times as you like, but if there is an underlying issue then it will continue to be a problem.
Click to expand...

I know the hub was cleaned before the previous set of brakes were installed so I'd hope that's not the problem.

helpimcrap said:
Have you tried going down a deserted open road, putting in neutral at 30mph then applying handbrake? Not jam it on but maybe 2or 3 clicks to see if the judderingcan be felt?

If ok then it's definitely the front and sounds like driveshafts or CV joints? It would be something that rotates so unlikely to be bushes?
Click to expand...

It's an electronic handbrake so I don't think that would work - it's either on or off and I suspect it wouldn't let me engage it when the car is doing 30MPH.
 
helpimcrap said:
Have you tried going down a deserted open road, putting in neutral at 30mph then applying handbrake? Not jam it on but maybe 2or 3 clicks to see if the judderingcan be felt?

If ok then it's definitely the front and sounds like driveshafts or CV joints? It would be something that rotates so unlikely to be bushes?
Click to expand...

He has a RWD Jag.
 
Go through your standard checks. Rock the wheel 12/6 and 3/9 check for play in ball joints, wheel bearing, track rod etc.. Check caliper for sticking. Measure disc and hub face for runout, sometimes if both have runout you can turn the disc to a position where the phase is ok and doesn't shake.

I had this symptom on my Lexus the other day actually, turns out it was because all the wheel nuts were loose, had tyres few weeks ago guess they weren't done up too tight.
 
lude1962 said:
had bad juddering on a previous car never properly fixed by pad/disk/caliper changes turned out to be worn anti-rollbar pins
Click to expand...

On one of my cars that was an issue with a knocking noise. I was thinking work through the obvious first which would be the rotating parts.

geekman said:
It's an electronic handbrake so I don't think that would work - it's either on or off and I suspect it wouldn't let me engage it when the car is doing 30MPH.
Click to expand...

er yeah... do not try that then. Doubt it would allow but if it does it would be dangerous.
 
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