You are probably in limp mode, is what the vehicle does signal you there is an issue that needs correction. Stop by auto parts store to get a free diagnostic code reading or take it into a shop. Sometimes I've heard that disconnect in the battery will reset the computer, Evenstill if it's a major issue it will just reoccur. So honestly the best method is to get it fixed please make sure you go to a mechanic you can trust I've ended up spending over $5000 just trying to identify what's putting my car in that mode