'97 Sable Wagon Stalls, No Speedo, shifting badly

[me262]

HELP!!!!

Car drove good....then started missing. a few seconds later it was losing power. Pulled over, turned off ignition and restarted. Ran good for a a couple of hours. Then problems became more frequent. Thought it might be a fuel pump...BUT....problem re-oocured....pulled over, turned off ignition...restarted...no speedometer. Drove into town...same problem...restarted...no spedometer AND did not want to shift into gear. Drive did not engage then when it did, I only had 1st gear. Drove home. Next morning started car...speedometer worked and car drove nicely...then problems all started again ....when speedometer quit working, power steering became tighter. Can't get it over 3,000 RPMS and that's in 1st. What's wrong with this car????