Kaya naninigas yung manibela, its because the engine is dying so walang power na nasu-supply dun sa power steering pump. IMO, walang problema sa PS system.

Sakit talaga ng Series 3 yung low idling pag nagme-menor, until the engine eventually dies. I used to own one for almost 10 years, and I experienced exactly the same symptoms. Nung pinalinis ko yung IACV at throttle body, naayos naman. Have your mechanic clean it. Got the tip from the old Nissanbayan forums.