When driving along uneven roads, specially a cobbled pavement, an annoying noise appears coming from the rear end assembly. It sounds like a damaged shock absorber, and seems as though the spare wheel were bumping into the floor. I've adjusted locks, rubbers, rubber bushings and holders. I have no idea whatsoever what can be happening, can anyone give me a hand?

Ya cambié varias piezas de la suspensión y no sé por qué aún sigue temblando el volante cuando piso a 80 millas por hora o un poquito más tal vez necesita una alineación o es que alguna pieza esté floja o alguna pieza esté mal...???