need some info here guys have a clicking noise coming from n/s front of my 1993 escort rs2000(under bonnet)when the clickin noise starts my brakes dont work properly pedal gose very hard and feels rough like the pads are down to the metal if you take your foot of the brake and re apply them they are fine clicking noise starts without touching the brakes dose sound like a relay sound abs sensors are new and new discs on vehicle