Brake rotors or ABS?
 

In my car when I stop from any speed it pulls fairly hard towards the left. At low speeds, there is a slight pulsating feeling at speeds from say, 15 mph and below when I brake lightly. When braking hard, it knocks and then it goes away. I am thinking maybe the left front rotor is a bit warped but any ideas on this one?
Thanks much
Ben

Sounds more like a suspension ( bushings ) problem, than brakes. ;)

may also be a bad or dirty sensors that activates the abs.

Any ideas which bushings would cause this particular problem? I had a bunch of them replaced, although some of them were not so if anyone has ideas wihch bushing I am looking at here, let me know. It is at its worst on bumpy roads in terms of the pulsating.
Thanks much

Control arm and strut top mount.

Check for binding caliper, too.

Peter