im just wandering if it is the iac but here it is seems to be people get htis problem. a bit i have no codes but no labtop my car warms up and has a wierd idle goign gor 500 to 1000 my car has various new sensors tps map knock. but i never replaced the iac but then i noticed once you turn the car off one of the injectors remains wet like leaks gas and when i start my car after sitting for a bit theres smoke white smoke. i know it could be and probably is valve guide seals but im just saying it in here. the car funs fine just at idle it does this and sometimes it just dies because the idle will go to low ive replaced the injectors. soo any ideas of if its this fuel pressure regulator or if its this iac

 

Test your IAC.