I have an 05 6mt coupe and it's throwing codes for the pedal position sensor and the vdc and slip lights are on. The codes are P2123 & P2138 which are Accelerator pedal position sensor 1 & 2. When the car is in nuetral and I floor it, the rpms slowly rise to 3k. It won't go any further than that. On a couple of occasions I drove it around and sometimes in certain gears I could get it to redline and drive normally but when I would change gears or let off the throttle and get back on the gas, it wouldn't rise over whatever rpm it had lowered to. I have changed both the throttle body and the gas pedal w/ sensor from 2 different working cars so I know it's not those 2 things. Could there be a blown fuse somewhere or a disconnected plug somewhere. I just need help on where to start looking next.