Pulsating and thumping when braking

[Milliterate]

I've searched and can't find any threads with the exact same problem as mine. My s13 just recently started pulsating and making a light thumping noise under medium to heavy braking. I can feel the pulse in the pedal, so I thought it was a warped rotor or uneven pad wear. I've replaced the front rotors and brake pads and bled the brakes, but the problem still exists. I don't believe it is the rear brakes, as the caliper sliders are seized on both and they honestly don't hardly work at all, not to mention, the caliper bracket bolts are sheared off, so I'd have to get an entirely new spindle to replace the rotors. It sounds like the thumping is coming from the front as well.

This seemed to start after I put new struts on the front. I've double checked all the nuts and bolts and everything is tight up there. I had the front on jack-stands for about a week with the struts pulled out and the control arms hanging only from the sway bar and tie rod, could that have damaged the sway bar bushings? Would that cause a stuttering front end when braking? I can't figure out what this might be, or why I can feel it in the pedal. Help!

[4cefed]

Uhh... fix your rear brakes. Do I really have to tell you that? You can remove sheared bolts. Drills, easy-outs, penetrating lube and hammers work well. You can buy new calipers loaded with new brackets, sliders with pins, etc. Start there.

Even if the rear brakes aren't working well, if the rotors are warped you will still get pulsating. Did you replace the strut tower mounts in the front? Those can go bad and lead to all sorts of weird thumping noises.

[OutToWinPAHC]

Yeah fix those issues, but a hub bearing can do this too