Brake Pulse
 

Looking for info.

Just got a 98 A4 1.8T Quattro with 89K miles. When I apply the brakes easy, there is a pulse coming back through the pedal. If I brake firm its not there, is this normal?

RE: Brake Pulse
 

nope you have some bad rotors
Can you feel where its coming from
Front or rear ?
If you cant tell drive on road that is not busy
and very little apply you hand brake, NOT MUCH !!!!
and see if you can feel the pulse through the body or Brake handle

RE: Brake Pulse
 

agree, sounds like warped rotors to me.

RE: Brake Pulse
 

ive got the same problem

RE: Brake Pulse
 

Warped rotors. Either that, or you have uneven deposits of pad material on the rotors.

Check ecstuning.com for reasonably priced replacements.

RE: Brake Pulse
 

i went to be my breaks checked out today and i guess there is nothing wrong with them, 50% left on the front and 25% on the back. i guess ill just have to deal with the pulse

RE: Brake Pulse
 

doesnt matter what % is left on your brakes bud, if they are warped, they are warped... I could show you brakes with 99% left, that are warped to hell. They get warped when they experience insane heat, from continous long hard stops. You're car may have had the snot driven it out of it :(

But yeah, that is the principle behind drilled/slotted rotors... get rid of heat, to avoid brake-fade and warped rotors.

RE: Brake Pulse
 

Might even be a bad ABS sensor. I had a vibration only when I stepped on the brake doing low speeds and I turned out to be a bad ABS sensor.

RE: Brake Pulse
 

The pulse I am feeling doesn't seem like its warped rotors, I've had that in other cars and the vibration was felt throughout braking.

This pulse does not occur until the last few feet of stopping, and it feels like ABS feed back. Very similar to when stopping on ice and pedal pulses as the wheels grip. I've tried braking with the hand brake and don't feel it.

Is there anywhere to check the ABS sensor so simply replace it?

I appreciate all the feedback.

RE: Brake Pulse
 

that is def your abs sensor, you have to remove your wheel, and it will be right there behind it. many times they just aren't installed correctly..like if someone has recently done any suspension work, they may have reinstalled it wrong...that would be ideal, since a new one is about 140 bucks [sm=icon_quiet.gif]