The engine is running rough, either just at idle or also during acceleration. Look at the FAQ's for rough idle and engine shaking problems for your specific symptoms. The gas cap hisses because the air is coming out (it was trapped under pressure). That is nrmal when your tank is less than half full (which would also be the time you take the cap off to put gas in. Hope this helps!
it could be your engine mounts are needing replaced
The shaking wheel part suggest that there might be an engine misfire, the engine light on suggests that the computer is trying to tell you what's wrong. Connect the engine to a diagnostic computer to see what's going on. The computer can often give you hints to the real problem.
SOUNDS LIKE THERES NO OIL REACHING THE UPPER PARTS OF YOUR ENGINE.
This is too general of a question. Please describe the noises.
you need to re-aline the wheels
its broken
Well, I don't think there's anything wrong with me, but there might be something wrong with you.
his spleen is about to burst
diarea
first you must determine that, it's NOT a rod knock or rocker arm
the wire is bad and you should be experiencing performance or engine missing or shaking the wire could also be installed wrong
she is rather sick and dizzy, and may fall over