We have a 91 Taurus with 67000 Km. Driving home one day it just suddenly lost all gears. No prior issues with transmission. Can anyone help?

If I'm not mistaken the transmission for that year and make have a defect after reaching high mileage. Mine went out about 120 grand and 100 miles from home. Going by what you said it's probably safe to assume that your transmission is dead. Unless you have connections this can be a very costly repair. You can have it rebuilt or replaced. Either way you go make sure you have the right person repair it.

Jiffy lube unplugged electrical plug in top of transaxel. Pushed plug back in and bent pins. Never worked right again.