So, anyone following the Kammback thread (
Project: making a permanent Metro Kammback extension) knows the replacement cruise control quit working yesterday in the middle of ABA testing after less than an hour of use.
I had one more thought that I'll look at: I wonder if the problem could be a weak vacuum line between the "T" and the cruise unit. If the line is collapsing somewhere when the cruise actuator starts working, I wonder if it would shut down.
The tech guy on the Audiovox support line told me it required a minimum vacuum to work. I'm not sure if he meant the unit senses pressure and requires a minimum or it shuts off, or if he was just talking about a minimum needed for the diaphragm to physically pull in the throttle cable.