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post #4 of (permalink) Old 20th February 2008
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Hi there,

You've prob never noticed it before as never braked hard enough, but the 'brake pedal like it was getting hit with a hammer' is a normal feeling of the ABS cutting in to stop the wheel locking. Obviously due to your broken ABS ring it was cutting in earlier than is should have. Freaked me out a bit to on my first car with ABS, I knew what ABS did but wasn't sure how it did it, but after I felt it I figured it out, has saved my skin a few times especialy driving through the lanes near where I live, always get some numpty driving in the middle of the road!
Basicly ABS will mimic Cadence braking to allow you to steer wile braking. Cadence braking is a braking technique where by the driver will pump the brake pedal rapidly, this stops the wheels locking and allowing you to steer round stuff! So that's what you're feeling when the ABS cuts in the brake pedal pumping.
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