Q: Engine shudders when not moving, check engine light on - 2003 Toyota Echo 1.5 L 4-cylinder

ANY time a Check Engine Light comes on, the first thing you need to do is get the computer scanned. Autozone or advance will actually do this for free so you don’t have to purchase anything. Shuddering could be a lot of things so finding out what code you have is an important first step in fxing the problem. When they scan it, they will do two things. It will clear the code (make the light go away) and it will give them a code. This code can be looked up to narrow down the search. Get this scanned asap.