Here's what I need to know:
* What is the exact problem? Is the "check engine" light coming on, or is it something else?
* When does the car shake? Is it when you accelerate, idle, brake, or all the time?
* How long has this been happening? Has it been a gradual change, or did it happen suddenly?
* Have you noticed any other symptoms? For example, changes in engine performance, strange noises, or fuel consumption?
Once I have this information, I can give you some possible explanations and suggestions for next steps.
It's important to note: I am an AI and cannot diagnose your car. If you are experiencing car trouble, it is always best to consult a qualified mechanic.
