Never heard of that before
But no need to wait for a couple of hours.....
just put your foot on brake and all residual energy is lost and computer is reset......
However will not fix problem!
Your on the right track,
AFM, altho a SAFC isnt going to help if your AFM is dud.
Smelling fumes in cab isnt good.....Thought about and exhaust failure? Cat blockage or maybe steel fibre has come away from a muffler, trying to eliminate things here....
Yeah like the other guys said....Anything to do with feul changing....Pump Injectors(done) Idle air valve, Idle stepper motor, Intake air leaks....hhhhmmmm the symptoms are pretty weird tho maybe there is just a gremlin in there n u have to get him out!!!