I'm having idle problems. I've replaced spark plugs, air filter, air master boot, Idle sensor box. But the problem is still there.

There is a wire connector that plugs into the air sensor box, and when it is plugged in the car will die instantly. Without it plugged in the car runs but very rough, and not well.

I don't know what else to do, or what else to fix.

If you know what is wrong, or even have an idea, please help me out.