brakes pedal vibration

[jelani6428]

another problem im having is usually when i start my car and pull out, when im coming to a stop, there is a strange vibration coming from the brake pedal , i usually have to let off the brake and apply it again ...and also a humming noise right before the vibration comes in...i just changed all 4 brakes and rotors last week s i dont know what else to do?!?! Thanks in advance!!

[jawa]

probably abs. your wheel speed sensors may be going

[sleepyalero]

replace front hub assemblys

[jelani6428]

i already did. i changed all 4 about 1 month ago.

[sleepyalero]

hmm.... hard to say... usually it would be a bad wheel bearing, or your rotors are somehow warped.

[zzyzzx]

i already did. i changed all 4 about 1 month ago.

Were they made in China? Did you buy them off of eBay?

[jelani6428]

lol...yeah..i got the hubs off of ebay. but it came on 2 or 3 days right after changing them.. i dont see how they can go bad so fast..but then we are talking about the lero!

[03glgold]

they went bad so fast because you got poor quality parts

[sleepyalero]

yeah go to napa for em, thats where i went and they have lasted over a year so far.

[brickkk]

i bought cheap bearing me like really cheap and they last me a year atleast not paying more then 80$ cnd maybe more warped disc id say

[a.graham52]

before you go and replace parts blindly (granted i agree they are cheap parts in there) look things over!: http://www.aleromod.com/forums/showthread.php?t=34924&highlight=bored

you could have a loose hub causing veration in your wheel speed (as far as the ebcm is concnerned) or you could have a bad wire like i did. you may OR may not get low trac/abs lights.

[billytheman1188]

did you torque the bolts that hold the hub to the knuckle to their proper specs? I believe its like 94 ft lbs. then the center nut needs to be torqued to 173 (but thats with the SKF assemblies i got...they gave you an updated nut instead of the caged one thats on there which needs to be toqued even HIGHER lol.)

[jelani6428]

I don't think he followed any specific specs as far as how tight it is suppose to when putting back on the hubs but he has done it multiple times before and this is the first time it went right back off as soon as we put it on...we did it with tools every time except once which was the first time it was done and that was by someone else ...what I'm trying to figure out is what is that vibration and sound from the brake pedal..I can start the car and pull out and you will hear a charging noise coming from the brake pedal ...it will stop but you will feel a vibration/gutting feeling ..then it will go away for the Rest of the drive some times the whole day

[a.graham52]

Sounds like abs or traction control pre-activating. A loose wheel bearing or bad wires can cause that. Look at my write up about how to diagnose this issue