High idle at first start

Every time I start my in the morning the RPMs start at 1,000 go up and down then it will slowly start getting higher and higher almost 2,000 sometimes. Feels like if I’m pressing the gas and when I put it in a gear it slams because it’s already accelerating. Then car will then pretty much accelerate on its own. I will do all kinds of stuff like shut the car on and off sometimes that works. I’ve done changed out da IAC and the TPS and it’s still doing the same stuff. I really need someone help.