Originally Posted by j_huhnke
Not all the time but sometimes when i stop or slowdown almost to a stop it will idle down to about 200-400rpms. So far ive cleaned the MAF, IAC, and throttle body. i bought a new IAC to see if it was bad but no change still does it. Also sometimes when im stopped at a redlight it feels like it bucks a little. and if i pull off the pcv how would i diagnose if its good or bad? what else should be checked for this idle problem? thanks for all help in advance
a bad pcv would more likely cause a high idle not a low idle.
you could check it though if it rattles it's good.
before doing anything i would reset the computer and see if the problem goes away after the engine learns new fuel air trim.