I feel a new thumping on my left foot as it rests on the floor of on the driver’s side. It seems to happen mostly when I’m turning the steering wheel, particularly right, and is most prevalent when the car is cold and going in reverse, though it will thump when turning the to the right and when it’s warmer–just to a lesser extent. I have also felt the thump in the gas and brake pedal. It seems to happen less/not at all when I’m going more than 40 mph. The car has 81k miles on it.
Any suggestions about where to begin would be very appreciated.