2000 metro very rough idle

4 cyldr has very rough idle along with engine shake. Just started doing this. I replaced the cam sensor a few months ago and all has been well. But it started running so rough, almost like it jumped time. I was unconnecting sensors to see if motor idle changed and when I unplugged mass air flow sensor on air filter intake tube, nothing changed. Could this cause such a dramatic idle ?

if your check engine light is on see if car has any error codes, may also want to run a compression test to check for a burned valve

It was plugs and wires... runs fine now. Thanks.