Changed my brake rotors but the pulsations keeps coming up

Does your ABS (anti-lock brakes) of TCS (traction control system) lights come on? Let the shop that did the work know about the pulsation, have them to check the RUNOUT on the new disc that they installed. If they find the problem and correct it, ask they to use a torque wrench to tighten your wheels instead of the air impact. Over tightening wheels can warp a brake rotor. Here is how to do the rotor job correctly in the diagrams below.