My idle will jump up periodically from 600 rpm to about 1500 and stay that way. Most of the time it will start normally but at some point throught the drive it will jsut raise to 1500. sitting at a light and revving a 1500 is getting a little annoying. I replace my IAC not too long ago so i don't belive thats it. Is it maybe my mass airflow sensor? Any suggestions.....comments. I would appreciate some help.

 

Take some electric parts cleaner and clean your maf. DO NOT use any others cleaners that might leave oil or residue on the maf, and dont touch the element as your skin has oil that can rub off on the maf as well.