Join Date: Dec 2004
Location: East Wenatchee WA
In addition, I'd highly recommend getting a new gasket for the TB before you do this-just in case you tear yours up on removal. Local supply stores here do NOT stock this gasket and it's an over-night deal. I get it, the throttle body cleaner, plugs, etc. and have them all on hand before tearing it down.
Also, keep in mind there are at least 3 different variations of IAC's that I'm aware of. Mine only uses 1 torx screw to hold it in place-most have 2 and some are a different configuration with 2.
I always remove the TB assembly from the rig, then strip down all sensors from it and THOROUGHLY clean it to mirror finish. Exercise the throttle plate very well and clean all residue from around it as well-a toothbrush works great for this. Clean all nooks and crannies in the TB-get everything to mirror finish. You don't want any haze, black ring or any other crap in there. I also exercise and clean the IAC, working the plunger and cleaning it well also. When satisfied everything is thoroughly clean, re-install all sensors then re-install TB with new gasket back on rig.
I've used many different kinds of TB cleaner and it is worth mentioning that if you have a higher mileage rig and this is the first time you've cleaned it, the dealer TB cleaner from Mopar is about the best/strongest I've used. It's a little more money at maybe $8-$10 a can, but for first time jobs, this is what I prefer. It cuts through the crap very well, and quickly. Standard off the shelf Napa stuff works good for follow up cleanings and is a little cheaper. Napa stuff will still work on a first time cleaning, but takes a little longer and more effort with the brush.
Hope that helps.
Best of Luck,