I have a 2009 Chevy aveo5 LS. My car runs fine but then will randomly lose power and by power I mean that no matter how far a push down on the gas pedal it wont accelerate. When this happens it's like turtle speed trying to pull into a parking lot or anywhere to get off the road. I noticed this last time that if I shut my car off and then wait a couple minutes it will drive fine but the check engine light stays on for a little bit and then turns off. Every time I have tried to get it scanned at any auto parts store it shuts there scanner down and are unable to check anything. Anyone know what would be the problem? I have read a lot of people saying catalytic converter but I'm not sure if thats my problem. ANy help would be greatly appreciated