So I purchase 2004 118 46,000 miles, previously a CoStar Commercial Property van. Sole intent to use as mobile construction office. I fly to California to pick up. Battery dead when I get there, they jump it with jump pack, it starts up. I drive it 1/2 mile no issues, then it stalls battery dead. Rather than screw around I go buy new battery, install it. Van starts right up. I proceed another 1/2 mile to fill up no problem, get to pump shut off fill up. Start van will not move or go above 1200 rpm in drive or reverse,park or neutral revs up.Van will not move no lights on dash. I get towed to garage they run diagnostic say computer is not getting voltage values. Tap on mass airflow all of a sudden boom got values. So replace mass airflow, reset codes drive all is good. I pay them, drive straight from Fontana Ca to Las Vegas no issues runs and shifts great. Exit on Las Vegas blvd transmission does weird jerk almost like torque converter locked 1-1. Then no go at all like tranny out of fluid. Turn key all way off wait start back up now have drive and revs only what seems to be second gear only for couple blocks. Turn key off do again can go further. Go to part store use scanner have mass air flow,speed sensor,axle ratio? codes reset drive I block later all same?It's Saturday am rent U-haul load driving back to Green Bay completely confused. Been reading forum, van was towed, prior o me picking up with rear wheels on ground no protection setting set, moved with a fork lift with one rear wheel partially turning, jumped. I have no idea where to start. Be home tonight