I just did mine today. It was stalling at red lights. My wife was worried about it, and i didnt want to spend countless dollars at the dealer. Thanks a milllion for this post. I have a subscription to alldata.com for my rx300 and they do not even mention the IACV or where it was loacted. Thanks again for this awesome post got mine done in about an hour. And yes my transmission seems to shift better too. Weird?