:mad2: I replaced both upper and lower engine mounts this winter and my knocking issue went away. Now, it's back. Sorta... kinda... This noise is very similar to what I heard before I changed the mounts. It's a sharp knock and when it does I can often feel it through the floor. I've been paying attention for a while now and I can't establish a precise pattern. It seems to happen mostly when I slow down when approaching an intersection (not all the time though). Sometimes I hear it when I accelerate while turning. Like when I back out of my driveway and start accelerating while turning into the street. The noise doesn't happen when I drive over bumps or potholes. It's a convertible so perhaps it's related to chassis flex? Steering rack was replaced by the dealer in 2014. I had the a couple of bushings replaced last year and I did the engine mounts. It's a real head scratcher... Anyone have suggestions or ideas? Could this be caused by the sway bar bushings? It sounds like the noise is coming from the front.