Could be the TPS, it will cause it to idle high and low and make the car become sluggish, but a vehicle will run without one, but it will run very rough.
Check fuses
1991
1991
1991
1991.
1991.
If it suddenly stopped working at all speeds, it probably is a blown fuse.
1991
That is it rigfhgt
47 years old.
Fuel Filter? Air Filter?