Q: How do i reset the computer after i change the crank shaft position censor?

My vehicle is idoling really high when i am just sitting and if i pull up to a light it acts like it wants to turn off... When i first start car in morning i let it warm up the electronis throtle light comes on blinking i then turn car off and back on and it goes away... the engine light stays on though

我的汽车有133323英里。
我的汽车有自动变速箱。