So I've been doing research and searching.... I'm new to the forum but been using info on here for years!!!

I have a 99 sr5 2wd 3.4
Plugs, wires, o2 sensor replaced 20k miles ago...

I've been having symptoms of s bad IAC (rough starts and having to hold down gas o keep idle up in the morning) so with all the research I ended up replacing it with a aftermarket iac and new gasket. At the same time I cleaned the throttle body and MAF. Disconnected the battery to reset.

Problem is worse!!!!

Now idles at 500 rpm with same same symptoms (not just cold starts). Now when I initially turn the AC on toms boggle from 450-500 for a few seconds. Checked for vacuum leaks.... Not sure what to do next

Other than that the runner accelerates and runs way smoother when driving. Problem is only when in idle and starting.