Waylander.12

Hey guys, so I’ve recently purchased a M35 Stagea and it has a check engine light, I’ve plugged in the car computer, and it says it’s the camshaft sensor for bank 1. however I have replaced this and the car continues to jerk viciously when around 1400 rpm. Was wondering if anyone has had this problem , also if anyone know why the fan runs the whole time the cars turned on