peteretep Posted September 28, 2007 Share Posted September 28, 2007 I replaced the front disks and pads in my galant a few months ago and now when im going over about 80kph and i touch the brakes, the pedal throbs, its not the normal shudder of warped disks, and the steering wheel doesnt shake like I would expect it to When I replaced the disks, I cleaned all the surfaces. But one disk made a sqeaking sound. So i swapped the disks to opposite sides and the noise seemed to go away, im unsure if that has anything to do with it now I dont use my brakes that much(engine breaking) plus I rarely go ont he motorway so I doubt the brakes would have had enough use to warp yet any ideas? Quote Link to comment Share on other sites More sharing options...
mikuni Posted September 28, 2007 Share Posted September 28, 2007 I haven't had much brake trouble so I can't help too much but I remember someone saying if you can feel a shudder through the steering wheel its the front, if you feel a pulse (or throbbing, as you so erotically put it) through the pedal then its the rear drums (/disks). Quote Link to comment Share on other sites More sharing options...
Unclejake Posted September 28, 2007 Share Posted September 28, 2007 You have 'pedal talk' and the only thing that does it is discs that are not true to the hub on all surfaces - as far as I know. Perhaps a diagphram issue in the booster but I wouldn't have thought so. One issue could be that you left a flake of paint or something on a mating surface when you put the discs back on. Another issue could be that the rotors were machined off the car (if they were second hand) - it is better to do them on the car to allow for mounting vaugaries(sp?) The other possibility is that you do have a warped disc - even though you have not abused the brakes much. Chur. Edit: And as Mikuni so wisely points out it could well be a rear brake issue if the rear is disc too (bloody metric cars....) Quote Link to comment Share on other sites More sharing options...
peteretep Posted September 28, 2007 Author Share Posted September 28, 2007 ok, I'll take my disks off again and check it out Quote Link to comment Share on other sites More sharing options...
kyteler Posted September 28, 2007 Share Posted September 28, 2007 bearings a factor? I fixed my Silvia "throbbing" / "pulsing" by changing the left disc to one from my other 12, worked a treat, scuff the pads up a bit on the concrete, wallah. Quote Link to comment Share on other sites More sharing options...
peteretep Posted September 28, 2007 Author Share Posted September 28, 2007 possibly, i'll give trhe disks a go first coz its easier haha Quote Link to comment Share on other sites More sharing options...
fuel Posted September 28, 2007 Share Posted September 28, 2007 Hrmm I hope it's not the fronts, brand new rotors and pads not long ago. If the steering wheel doesn't shake it could indicate being the rears? Jack up the rear and take the wheels off an inspect the rear brakes, check rotor thickness and check for scoring etc, also check thickness of brake pads - should be min of 3mm of brake pad meat. When I swapped over the rear discs the rotors were machined by previous owner and the pads looked to have a bit of meat left still. Quote Link to comment Share on other sites More sharing options...
Hemi Posted September 28, 2007 Share Posted September 28, 2007 if its through pedal and theres no shaking itll be the rears ( like everyone has siad) Quote Link to comment Share on other sites More sharing options...
V8Pete Posted September 28, 2007 Share Posted September 28, 2007 Howcome the rears magically start shuddering straight after you change the fronts though? I always thought last thing you worked on = thing you broke stz. Quote Link to comment Share on other sites More sharing options...
peteretep Posted September 28, 2007 Author Share Posted September 28, 2007 yeah thats what I wouldve thought, its definately a throbbing over a shuddering, Quote Link to comment Share on other sites More sharing options...
fuel Posted September 28, 2007 Share Posted September 28, 2007 The fronts were done about 6 months ago from memory. Again I'm kicking myself for not taking the rotors off that rolling body before I dumped it. Quote Link to comment Share on other sites More sharing options...
V8Pete Posted September 28, 2007 Share Posted September 28, 2007 yeah thats what I wouldve thought, its definately a throbbing over a shuddering, Give it another month I have the same problem. Camira started 'throbbing' not long after front pads and rotors (drum rear) Vectra started shuddering not long after front pads and rotors (disc rear) 205 = sweet after [cheap] front and rear pads and rotors (and trackday hammering) 306 = sweet after front pads and rotors Both troublesome cars don't seem to have any steering feedback. Pwnt. Quote Link to comment Share on other sites More sharing options...
V8Pete Posted September 28, 2007 Share Posted September 28, 2007 The fronts were done about 6 months ago from memory.Again I'm kicking myself for not taking the rotors off that rolling body before I dumped it. You've got shake/shudder/throb too? Quote Link to comment Share on other sites More sharing options...
peteretep Posted September 28, 2007 Author Share Posted September 28, 2007 nah my galant used to be his you say it started throbbing, what did you do to fix it? Quote Link to comment Share on other sites More sharing options...
V8Pete Posted September 28, 2007 Share Posted September 28, 2007 nah my galant used to be his Oh. Howcome you changed them again so soon? you say it started throbbing, what did you do to fix it? Haven't yet. Will probably get a mobile van guy to come and give them a skim after exams. I talked to a mechanic who reckoned sometimes it just happens and you need to machine brand new discs on the car to fix. Quote Link to comment Share on other sites More sharing options...
peteretep Posted September 28, 2007 Author Share Posted September 28, 2007 nah I think he means that "I" changed them 6 months ago have you had warped disks before? Quote Link to comment Share on other sites More sharing options...
Hemi Posted September 28, 2007 Share Posted September 28, 2007 i find it hard to belive the those discs woulda warped by now one i dea i just had is to jack up car and semi engage handbrake and see you you can feel noticble highs and lows ...you can fix them *if they are new* by getting a mech to profile them with a on car profiler thing if they are worn however you have to get new ones Quote Link to comment Share on other sites More sharing options...
V8Pete Posted September 28, 2007 Share Posted September 28, 2007 nah I think he means that "I" changed them 6 months agohave you had warped disks before? Lol Na, never had warped discs before. Have driven a few other people's cars/vans that would shake your fillings out trying to pull up from >80 km/h though. Quote Link to comment Share on other sites More sharing options...
fuel Posted September 28, 2007 Share Posted September 28, 2007 That's what happened with the fronts originally eh Pete? The steering and pedal shuddered at highish speeds? Quote Link to comment Share on other sites More sharing options...
WDE_BDY Posted September 28, 2007 Share Posted September 28, 2007 DELETED Quote Link to comment Share on other sites More sharing options...
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