Idle sucks :(

[Xero]

okay, my idle sucks majorly right now, when it's cold, everthings cool, but when it warms up, the idle jumps around.

The idle is supposed to be at 700rpms +/- 50. What it's doing right now is dropping to 500, then coing back to 700, then up to 800, then back down to 600, then up, and down, and, you get the idea.

I have cleaned the IAA valve, and my throttle body. I haven't "cleaned" my intake track to the throttle body, but I did blow it out with compressed air, so I don't think that's the problem.

I think that one of the Solenoids on the IAA valve might be going, because when I had it out, I put 12v to it, and it didn't really want to work all the time, but I thought it was just me.

Would cap/rotor, and/or spark plugs screw up my idle? I doubt my intake did it, but could it have? what about cleaning my whole intake manifold, it's really nasty in there, THANKS!!

I disconnected the EGR valve as a test, a friend told me too, and it made the idle worse, so that's not it,

[QuinGarcia]

Just blowing compressed air throught your throttle body will not clean it sufficiently. You must remove all the built up carbon on the throttle blade and around the area where the blade rests at idle.

[Xero]

I didn't put compressed air in the throttle body, I did it throgh the intake track, I used carb cleaner on the throttle body, that's not the problem, I'm taking it to the the Nissan dealer this weekend,

[drjohn]

It could possibly be a bad connection at the coolant temp sensor or in the engine room harness along the firewall or the top of the engine. Bad connections at the injectors can cause bad or rough idle and airflow meter connector. Also don't forget the simple things like a vacuum leak. Anything after the airflow meter that leaks can cause a problem.