Bought a used 15 Wrangler Willy’s (4 door, automatic). Let’s say I’m at a stop light and not moving. From a complete standstill when I step on the gas pedal I hear a loud tapping noise coming from the rear/bottom of my Jeep. I only ever hear it if I start moving from a complete stop. If I accelerate slowly it does not make the noise. But 9 times out of 10 when I start moving, I hear this noise. It only does it when I start moving. Once I am moving it doesn’t happen again until the next time I stop and then go again. I’m about to bring it to a shop to get it checked out but I wondered if anyone has an idea what it could be.