Thank you for everyones help, It is very much appreciated, you guys are great. I just got the plugs in a couple of minutes ago and my car seems to be running great. I took a for a real quick stroll around the block and it seems like it is running smoother. It idles smoother as well. So only time will tell if I will get better gas mileage out of it.

I am still curious though, as mentioned in my title, where is this elusive AIT (IAT?) sensor, whatever you call it? Still wouldn't hurt to take a look at it right?

 

Make sure you have threaded it correctly, before applying torque.