I have a 01 gt with 190k original miles on it, the car is auto unfortunately, but anyways to the point, when the car has warmed up the engine starts shaking bad and it makes the hood jump up and down, this all only happens when its in drive or reverse when im not moving, so like in traffic, stop light, ect. I got a full tune up and it still happens, of course with 190k vibration is expected but the way it shakes and the hood vibrates up and down seems a bit much. Do I need new mounts? LMK