zoralis

As soon as I start the engine it goes away? Is this a normal thing or does everyones car do this? I noticed it last week and the car hasn't had any noticeable problems. The only thing is that a few weeks ago it gets kind of slow when I accelerate and it wasn't like that when I got it last month. About two weeks ago my car scraped really hard while I was backing out of a friends drive way (my car is lowered), I'm not sure if that has anything to do with the check engine light?

(I have a 2008 Lexus IS250 btw)