93 chevy s10
 

well my s10 its been doing something weird when i crank up sometimes start like its going to shot off but then the rpm goes up a lot n dont come down so i change the idle air control valve but it keep starting sometimes like it want to shot off but this time when the rpm goes up it goes down after a few seconds but what i want to know is what could be causing this problem....

i also have another problem when im driving for along time my right tire gets like stock or something because my wheel goes to the right a lot