Shake in the steering wheel and all the car!

After checking spark plug and coil cables and the basic ignition, if you are in good condition and you have a sparkle in the 4 spark plugs, be sure to check the acite because the engine may be walking in 3 cylinders for water in some cylinder, if the oil comes out white you have nothing left but to disassemble butt.
It is common to find corsaes with a cylinder head problem that passes the water to the oil or some cylinder
I hope it serves you
greetings

If you already revived that the tires are not deformed and the balancing is adequate, check the engine supports

After reviewing the ignition system, I recommend you try the understanding of the cylinders. It does notice the results.
If any of them has a fixation of more than 25 psi, it is possible that it has problems with valve seats or loss of understanding by the Board of Boards.

Look usually all the comments are correct, what they don't tell you is that tremor is because the vehicle is working in three cylinders in the four of the four, the first thing to do is with the engine on nothing disconnecting from a spark plug cable, when you are one and the vehicle does not get worse or stop is there where the problem is, there I may not be injected, this is more complicated that happens but it is a Czech possibility and warns.

I had a problem similar to that you mention in an ocación Checate the following, the problem that my car had was a constant viberation with the engine on, not being underway, when making a strict review, the following were detected after the engine stands were defeated, that is to say the right motor support, the left and the one of the box, the change of these was made and the vibrations decreased but the vibrations were still Surprise The exhaust pipe was damaged had certain holes as well as the exhaust board were replaced and the vibrations disappeared, as Data Checate also, the ignition coil when it does not work at 100 porcirnto emits vibrations since there is a motor cylinder that is not working due to lack of spark.