When I turn the steering wheel on my transmitter, I hear a clicking sound and the wheels on my car don't turn freely. What could be wrong?
Sounds like you may have a stripped servo gear. You will want to open up your servo by unscrewing the 4 screws on the bottom of the servo case. You will then be able to pop off the top of the servo and check out the gears inside. If you determine that you have a stripped gear, you can rebuild the servo with a replacement servo gear set.