Audio, give it a shot. You are not going to hurt anything as the fuel injectors will not be spraying. Then you might be able to see the throttlebody sticking or some other oddity.

Hello all!
It has been a while. I finally got a chance to mess around with the jag. I had my daughter pressing and releasing the footfeed, to see if I could see anything weird with the throttle plate, all while checking voltages. There was no evidence of any problems.

What next?

There obviously some kind of sensor at the actual foot pedal, could there be a signal issue going to computer, that would have to coincide, with the tps? If so could the issue be there, or do I need to just tear apart this tps, and clean it, and adjust the wipers, and see what happens?

Thanks for your time!
Mike