HELP! steering wheel wobble when brakes applied

GsiTurbo · Post by **GsiTurbo** » Fri Jun 17, 2005 6:21 pm

I dont want to scare anyone, but friend of mine, who happens to run an automotive repair shop, was lately complaining about brembos, and they nature to warp prematurely

MMamdouh · Post by **MMamdouh** » Fri Jun 17, 2005 10:58 pm

i took off the left rotor today as i wanted to see if their was a problem in the hub surface (i had a broken wheel bolt removed from it before) and i noticed very little surface deformty arround the hole where the broken bolt used to be (from a spanner or so) and i noticed that the hub surface is machined so such deformty can cause problems.

i removed the protruding metal parts with a screw driver and then cleaned the whole hub surface with a wire brush and it is supposed to be smooth a silk now.

i inspected the rotor surfaces and found nothing on the outer surface... the inner surface however got two circular grooves near the outside... it is not supposed to have such thing but as long as it is in a concentric circle form i guess it can't cause wobbling...right??

the pads seemed OK... i didn't compare them to the ones on the other side but both left pads seemed pretty much the same size (i used to have a slimmer outer pad than the inner one on the left wheel and both are slimmer than the equal sized right pads with the old rotors).

further testing will start within the week... will keep you all posted.

MMamdouh

MMamdouh · Post by **MMamdouh** » Sat Jun 18, 2005 1:16 pm

just two additional peices of info:

1- when the guy that removed the broken bolt tryed to take off the retaning screw from the rotor the screw broke... he used another screw that looks the same so i am not using the OEM retaning screw anymore, i am using another one that does the very same job... or at least i think so. can this different screw cause problems?

2- i never torqued my wheel bolts either during the past 6 years.

MMamdouh

MMamdouh · Post by **MMamdouh** » Tue Jun 21, 2005 10:47 pm

any ideas concerning this foreign retaning screw??

MMamdouh

woo · Post by **woo** » Tue Jun 21, 2005 11:40 pm

when i had a similar problem with my car, my dad told me to floor it in reverse, then jam the brakes on because he suspected it was a disk out of alignment (a problem he had often in a corona he had in the 70's) It worked for me,but i doubt its the same problem

MMamdouh · Post by **MMamdouh** » Wed Jun 22, 2005 1:16 am

i don't get it

does doing that fixes out of allignment disks? or does it detect if you have one??

MMamdouh

john_trickle · Post by **john_trickle** » Wed Jun 22, 2005 1:43 am

i had something similar i thought it was the front wheel bearings but it was a plastic gromet in the sterring colum, it could be that if you look down your sterring colum shaft just up from your brake pedal there is a plastic gromet that slides in the stering shaft sometimes they come out just push it back again and problem is solved let me know if that was the problem thanks
john_trickle

woo · Post by **woo** » Wed Jun 22, 2005 3:05 am

it just forces the disk back into allignment i guess. If the thing got out of alignment going forwards, then backwards should put it back. I dont know what happens or how it worked, but its not something i'd want to do every day

john_trickle · Post by **john_trickle** » Wed Jun 22, 2005 3:40 am

i know i was putting it in everyday so i put a hose clamp underneath it and now it doesnt move lol.problem solved
john_trickle

MMamdouh · Post by **MMamdouh** » Wed Jun 22, 2005 1:47 pm

john_trickle wrote:i had something similar i thought it was the front wheel bearings but it was a plastic gromet in the sterring colum, it could be that if you look down your sterring colum shaft just up from your brake pedal there is a plastic gromet that slides in the stering shaft sometimes they come out just push it back again and problem is solved let me know if that was the problem thanks
john_trickle

i remeber i saw that plastic thing some two years ago when i was messing with the pedals and it was all the way down.... got to take another look at it and see.

MMamdouh

MMamdouh · Post by **MMamdouh** » Wed Jun 22, 2005 1:52 pm

woo wrote:it just forces the disk back into allignment i guess. If the thing got out of alignment going forwards, then backwards should put it back. I dont know what happens or how it worked, but its not something i'd want to do every day

that reminded me of something... i think the brembo rotors were not that tight to the central hub... i mean the central circular hole in the rotorr is not that tight to the hub's central cylender which can cause some miss allignment, i am not sure though... got to give it another look and maybe some pics can help you give me better judgment for my clames.

MMamdouh

MMamdouh · Post by **MMamdouh** » Fri Jun 24, 2005 6:31 pm

john_trickle wrote:i know i was putting it in everyday so i put a hose clamp underneath it and now it doesnt move lol.problem solved
john_trickle

i have checked mine and it is out of its place by a mile... i put it back today and i have some long highway driving tomorrow... will conclude testing and keep you posted.

MMamdouh

MMamdouh · Post by **MMamdouh** » Sun Jun 26, 2005 9:36 am

tried the car for some 250 Kms yesterday and still the same problem

MMamdouh

MMamdouh · Post by **MMamdouh** » Mon Feb 21, 2011 11:12 am

update after 6 years... bottom line is: the 236mm rotors on 1.5 SOHC lanos are just too small compared to the car size and weight

anything over and above gentle driving will strain the rotors beyond their limits and they will warp... if you are spirited driver or abuse your woo then upgrade to the bigger 256mm rotors

MMamdouh

The original daewootech forum

HELP! steering wheel wobble when brakes applied

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Re: HELP! steering wheel wobble when brakes applied