OK, good advice, I don't see any dramatic bends that would cause this and the cable I replaced was an assembly not a core so you would think it would be right?
Mine was too (brand new assembly), but I had over extended it right inside the firewall, under the dash. It didn't look like a problem, but that was it. I got the stupid thing stuck up on 50, and reached up under there and pulled slightly on the cable and it immediately dropped to 0. :banghead:
Like I said, it might not be the issue, but when I read your OP, it was exactly the same thing I experienced.