Car runs fine then dies after driving jerks and dies after driving for about 20 min then will not idle

SOURCE: When in park or idle it jerks back and forth

It sounds to me like you may have a blown intake gasket, which is very common on the 3800 V6 engines used in these cars, as for your power steering, the resevoir is located bellow the alternator on the back side of the engine ( it will be directly behind the pulley driven by the drive belt)

SOURCE: Car wants to stall while driving

Check for trouble codes first thing, It could be a number of things. example, mass air flow sensor, map sensor, crank sensor, ignition module. Check for codes first to see if there are any. That will help you get on the right track

SOURCE: 89 oldsmobile cutlass supreme car dies when

check timing belt

SOURCE: runs fine for awhile than door lock stop working

look under the carpet on drivers and passenger sides for the ground blocks.
turn edge of carpet next to door over close to front and there is a metal plate with a bunch og ground wires that need to be cleaned for a good connection.

SOURCE: car runs for 30 min

Not the crank sensor. It is the coil. Coils are nothing but a coil of copper wire. When the heat comes up the copper wire expands and causes the wire to come apart. When it cools it shrinks back and the car will start again.