Usually when an ABS pump kicks in you will feel the pulsing, this is the ABS Pump doing its work. I only notice mypulsing or ABS activation during hard braking or when I am on ice or snow. If it is doing it during normal braking you may have a malfunction in your braking system. A malfunction can be anything from a sticking caliper to unequal pressure, but it seems to me that you have a wheel that is potential to locking and the ABS is kicking in. Could be a speed sensor too. I would get the brakes checked to ensure everything is ok. Good luck!
Brian

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Brian W. Heitman

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