The MDS system in my '14 1500 5.7 seems to be "fluctuating" when it shifts back to 8 mode from 4 mode. I can feel it in my pants and hear it. I confirmed this by shutting MDS off by using the gear selector on the steering wheel and the issue went away. I have AlfaOBD so I can do some in-depth stuff but I'm not sure where to start. I already took the throttle body off and cleaned the crap out of it using throttle specific cleaner. The truck has 128000 miles. Could it need spark plugs or is it something more sinister?
When you mean “ sinister “ do you mean unknown to you or unpublicized ?
I would actually look into what you wrote and say you have the right idea and it’s literally right in front of you but it is only MDS related in that it has to adapt to your personal driving characteristics and deal with it’s own unknown's ( nominal wear ) adaptively.
Most owners forget we have vehicles that can react in fractions of a second meaning essentially we as operators need our own upgrade to interface.
If you are like most people your driving habits are just that habits and wear patterns are going to form on anything from your tire treads to the creases on the drivers seat ,
all that and the routes you take to and from home the fuel you purchase .
The bottom line is you age and your vehicle age…
…you to some degree have regenerative cells…
… your vehicle does not.