Alright i've had some previous problems with my brakes im sure just due to age and mileage. I have replaced all rotors, pads, shoes, drums, greased and lubed everything, replaced dustshields w/ speed sensors, parking brake cables. It used to be less frequent but when i apply the brakes at the point of stopping, they pop a little, and when i let off when i go to touch the gas, they pop real bad like they were caught or hanging up and it is extremely noticable. Also my antilocks go off at random times when braking and the light will flash on at random times, which is a problem when stopping in a short distance because you keep moving forward. This is why i replaced the dust shields with the speed sensors which werent cheap and did not fix the problem, any ideas?

 

I have you checked the length of all the abs sensor wires,if they are damaged somewhere and shorting this could happen.