So recently I have heard this clicking sound coming from my front end. I hear it every time I hit the gas from a dead stop. It happens in 4 wheel drive and in two wheel drive. The shaft that comes out of the motor, and into the differential when I move it it makes a similar sound. Does that mean the the shaft is bad?? Should I just keep going until it blows out?? Or is there any way to maybe fix this? Thanks in advanced.