What your indie is calling "throttle pressure cable" is what is normally called the "bowden cable".

However, I wonder why he doesn't think the problem is the upshift delay valve.

I'm told that 95% of the time, the problem is that the upshift delay valve no longer holds vacum.

My bowden cable was replaced with the upshift delay valve anyway, for what it's worth (which is the title of a good song by Buffalo Springfield).

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".