Hey H-T, yesterday i was driving and I turned my car on and it idled fine cold, it warms up and it started idling high sometimes at 1k sometimes a lil over, sometimes 900, or a lil lower, I don't believe I have a vacuum leak, & I've cleaned my IACV out not too long ago. A check engine does come on while driving sometimes but I think it's my O2 Sensor... But I have a video showing when I throw into neutral the rpm's stay kinda high, until I fully stop for a lil then it'll drop to 900... I was wondering if anyone can point me in the right direction? http://youtu.be/2fw9aZcLgCY

 

Check the code and go from there..

 

Oh hey "wunfstgsr" I've spoken to you before I think! Lol AWSOME username lol & it only comes on randomly and I think it's the Primary O2 Sensor, would a O2 throw off idle like that?