I have a 97 3500 4x4 with a 5spd and 75k. I recently had my throttle cable break on me. I replaced it with a new one, and now I have an extremly light pedal, and if I hit any large bumps in the road and I accidently goose the pedal, my truck starts bucking. It will also buck/shudder at about 1700-2000 rpms, and it does not matter if I am accelerating, holding, or letting off the throttle, it will do it. My old cable was very frayed. Any suggestions?