juddering brakes
- Thread starter AntB
- Start date
944 LIL
New member
Hi
Finally got the energy to have another go at my brakes - I did the pads, calipers and discs in one go a couple of months ago - sure it would resolve the juddering problem. Unfortunately it made absolutely no difference[
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So where do I start - or probably more accurately - to whom would you recommend I take the car - daft question but is there such a thing as a juddering brake specialist?
Finally got the energy to have another go at my brakes - I did the pads, calipers and discs in one go a couple of months ago - sure it would resolve the juddering problem. Unfortunately it made absolutely no difference[
]So where do I start - or probably more accurately - to whom would you recommend I take the car - daft question but is there such a thing as a juddering brake specialist?
Chaps, Colin has a Lux, so the disk arrangement is not the same as that on the S2/Turbo. Colin, you will be able to tell whether the problem is disk-related or not by checking the run-out on the disks, using a Dial Test Indicator (DTI). You may remember, back in January I used mine on your car, and find that (from memory, so likely to be wrong), the off-side disk had quite a lot of run-out on it. Spec is 0.02 of a mm, I think, and yours was quite a bit more than that. If the new disk has the same problem then that will certainly explain the judder. You're more than welcome to borrow my DTI again to test it - I can post it to you if you want; using it is easy (alternatively the upcoming garage day may be a good time), or you could buy one (mine was about £20 on ebay.) The Lux has a simpler set-up whereby the disk is held on by more than just the wheel bolts, so it's easier to check than on the S2/Turbo setups. If the run-out on the disk is within spec then start looking at other things. Bushes and tie rod ends and so on. You should be able to spot a badly goosed one of either of those with a good shove when the wheel is in the air, and checking for play. (Indeed if bushes or tie rods are badly worn you'll be failing an MOT, so if it has passed recently they they may well be OK.) Oli.
944 LIL
New member
finally got to the brakes today - did the rear discs and pads - kind of knew it wouldn't help - the judder through the steering wheel really pointed to the front brakes - none the less - new pads on the rear and the opportunity to tighten the handbrake - made the effort worthwhile anyway - blinking sorted - no judder - no pulsing back up from the brake pedal.... i was so happy i bought the wife some flowers so only the leaking roof, leaking power steering, sticking accelerator pedal etc etc to go - still loving it []
]Steady on guv'nor! Glad it's sorted. It's funny how problems with rear wheels can exhibit symptoms normally associated with the fronts; in fact, it's also funny how sensitive 944's are to slight imperfections in balancing, tracking, disk wear and whatnot. I had a slight wheel judder that felt just like an out-of-balance front wheel recently. But nope - the front wheels were perfectly balanced. However, when taking the rear wheels off to bleed the brakes recently, James_G came across a (deep breath, chaps), lump of chewing gum stuck on the inside rim of one of the rear wheels. Since that has been removed, the apparent mis-balance of the front wheels has disappeared ... Glad that your problems had a happy (and simple) ending Colin. Oli.
Hi Colin Great news about the brakes, and noticed under "other jobs" sticking throttle pedal. This is usually when the car has bee jacked up with supported on the floorpan under the pedal and is cured with a solid piece of wood placed near the pedal and a few large(ish) hammer blows to flatten the floor again! I've done it wasn't the first and know wasn't the last! Mike
pauljmcnulty
Active member
One thing noted on the ramps at the weekend is that mine has been jacked up in the wrong place on both sides, and with something vicious enough to have taken the underseal off and cause bare metal to be left open to the elements. You can't get thicker than a cheap tyre fitter. [
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... and a pleasant one at that! Thanks again. (Should add that I only realised this surprise fix the other day. At around 80-85mph, when it would previously have been gently wobbling away, I noticed it was steady, as it should be. I am attributing this to the lack of chewing-gum ... Mr Smiths' loss is my gain.) Oli.ORIGINAL: James_G Now that is a surprise
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