92 jimmy4x4 with multiple problems please help

:banghead: the jimmy ran fine till it ran out of gas added gas started it drove it hesitates between 0 and 10 mph then shuts down at operating temp ???
checked thermostat changed throttle postion sensor. my 4.3 is a mpi not a tbi also any ideas why the 4 wheel drive will just pop on and then wont shut off till you shut car off??

I have found that u cannot run these vehicles out of gas because as soon as u do u fry the fuel pump