Great, seems like your on top of things. Thx for that, us here at bat auto like it when a plan comes together. It is always appreciated when a thread comes to a good conclusion.In the process of fixing the throttle and cleaning the IAC valve, I somehow fell into a radiator flush and a oil change. New tires sometime this week.
New stuff is throttle by wire, when under the hood for charging the AC system or checking alternator output, haven't figured out how to rev the engine. Arm isn't long enough to reach around to hit the gas pedal. Maybe I can get a stick on it to the front seat.
No longer a governor in the transmission, using a cheap coil of wire around a bar magnet called Vss, since the potentiometer is on the gas pedal and converted to digital in the PCM, just takes a bit of software to emulate cruise control. Vss for the AT gives speed and the throttle control adjusts the vane in the throttle body.
Cruise doesn't cost anything extra, but if you buy a base model won't give you the switch in your steering wheel to turn it on. Daughter just out of college purchased a new Kia Soul, being a mean dad, don't buy cars for them after they graduate, already blew $150K for her. She got the base model with no cruise, but I found a 15 buck switch for her car that mounts in the steering wheel so now she has cruise.
GM wants 300 bucks for a new steering wheel to get cruise. Getting unhappy with GM and Ford.