have a 94 Ls, i don't know where this is at. people say that it's on the throttle body, but there is two of them. one on top and the other on the backside. please help.

 

I dont think its on the throttle body since the one on top is a MAP sensor and the one on the side is a TPS sensor. The IAT I believe is on the 4th intake runner, the one closes to the timing belt, its a white sensor with two philips screws on each side. If you take it out the part that goes inside the manifold is in a shape of a cone.