Hi all,

recently after spraying the upper engine cleaner and purging it all out from the exhaust, i have an idling prob on my car.

It drives alright but when it's idling, RPM fluctuates down and up and the car sounded it had "Cams" in it.

Give it a tad bit of rev and it will go up initially and straight away drop down to almost zero and sometimes it stalls. i've cleaned the idle control valve sensor and put on a brand new afm but to no avail.
Have checked all vaccum lines as well as the bov for leaks. dunno if it's the o2 sensor playing up.

Need some "guru-lious" replies and help here.......... Anyone???