well I haven't out it in neutral or anything yet b/c as soon as i started it itmade all that noise and i shut it off. I attempted 3 starts total and they all had that grinding noise. I'll go test it now on neutral and see but I had a problem prior to me doing all this with the car as far as it had high RPM excpet when on drive some said to adjust the cable. it would accelerate on its own on park and nuetral except on drive.