The only tricky thing about the IAC is removing it as the screw hole sits kinda flush with the intake manifold, and its a very tricky spot to get to. I suggest cleaning your MAP sensor as well. Google both of them real quick to find out where they are. Both of them have two screws each. Buy a bottle of MAF Sensor cleaner, which is the only cleaner you should use on sensors! Use a really soft rag to wipe it down. If you don't have the little rubber gasket for it use some RTV when putting it back.
Matte Black '96 ZJ 4.0
IRO 3.5" Benchmark Lift, Bilstein 5100's, 31x10.5x15 Westlake SL369 A/T's, Moog Super Trail Boss SS, KOR Rad Support, Chopped-up Front Bumper