ive noticed that when my car shakes randomly and makes a knocking noise from the bottom of the car. Weird thing is that the engine dosent sound like its knocking from the top of the engine, only when you put yur ear to the bottom of the car. My stang stays to temp, I got a temp guage tapped into the block and it never goes over 210 degrees. i feel a loss of power from 1k and 2.5k rpm but after that is seems ok. People have told me everything from my car is misfiring to my flywheel is unbalanced. I dont know wat to believe>?!!