I’ve tried everything and my emissions won’t do right. My hc has been over the limit and the o2 has been fluctuating. Ik it’s not my altnator I’ve changed O2 Sensor and cam shaft position sensor. Idk what else to look at. PLEASE HELP

 

Need a bit more info but hc is usually because of ignition issues. How's your co? What year is this and where at?

 

Is the High reading at Idle or under load? Could be ignition, could be excess oil vapor in your intake (PCV system), worn piston rings (Blow-by), or bad valve stem seals (the oil related ones are not as common but should still be considered).

OP, have you looked at your plugs yet? Any that are white would indicated a lean condition (most common reason for high HC), oil-fouled would indicate an oil based problem.