The engine code P1584 is the main thing what need to check and it is important to confirm the process of the VCT solenoid. You are looking for a stabbing or stuck VCt solenoid valve that produced by pollution. It refers to car precise overhaul manual to achieve module tests for the VCT unit. The powertrain of the car engine is here faulty and it needs to solve properly. The lifters can be distorted by unfastening an interior locking pin. The locking pin is detached by solenoids to change oil heaviness fed into the lifter. Fix the car engine very fast as soon as possible.