ed6713 wrote:
It doesn't have to be fixed becaus it's not broken.
The section of the computer that controls the shifting of the transmission, knows what it's doing.....
Exactly right!
Ford's torqueshift transmission, and computers that control it and the engine know what they are doing and they do it well. No need to fix something that is working exactly as designed, and working very well. Ford electronics will not let you over-rev and damage the V10 engine, its pretty well a bullet-proof drivetrain.
My recommendation: Don't use the cruise control in the first place, especially not when towing a car. I quit using cruise control when driving RVs a looong time ago, back when we first started with various towable RVs. When an engine is working this hard, moving this much weight, cruise control is not a good idea in most cases, IMO. Much better to work the throttle yourself, that way you can anticipate various hills and give it some 'go' before getting to the hills. Keeps you more alert, too, as you need to be when driving something this big.