2005 F-150 brake problem.
 

I put new pads on it since I had it back from the lake anyway. It does that tapping at the bottom of the pedal as if you have a speed sensor problem. I hooked up my Solus Edge engine scanner to it but it never went to zero like a bad speed sensor would. All 4 sensors were reading the same speed as it slowed up. You feel it through the pedal as if you were on ice. I feel I'm missing something.

Any advice?

Thanks,

Gary