Wobbles, shakes

Welcome to 2CarPros. So with the engine running it shakes, does it start doing this as soon as it's started or does it need to warm up a bit first? When you first turn on the key does the CEL come on and then turn off when you start the engine? Does it blink when the shaking is going on? What code reader do you have? Have you tried it on other vehicles just to be sure it works? No DTC usually means no codes.