2 months ago i replaced the driver side caliper. ever since the cold & snow came and the ABS has been doing its job i seem to be haveing issues. first off i believe there may be a minute amount if air in the caliper i replaiced. now as for feel and sound. the brake pedle kicks back quite forcefully when i lose traction. but now reciently i can hear and slightly feel a pulse (@ the master cylnder) each time the ABS sensor picks up a reading. obviously its only when i start coming to a stop that its really noticeable. in hoping its just air in the lines. but why has it only been the last day or two since its been getting progressively worse. being its cold here in Pa. maybe moisture?

anyway any and all help would be greatly appreciated!!
respectfully,
phil

 

Did you also replace the pads and rotor? Ceramic or metallic?

How about the other side?

 

pads yes and metallic.

 

You should ALWAYS replace calipers as a pair. Calipers are considered a maintaince item and they will wear out. If one is working better than the other it will throw the control module off in it's ability to control braking pressures to each wheel.

 

i should also say that it is a state police cruiser from Frackville Pa. so i would like to believe it was well maintained.