So i was doing normal driving and stopped at a sign, i shifted into 1st and noticed it was really slow and went into 2nd and i noticed it downshifted from 3rd. so i tried putting it in first and it wouldn't go and just went into 3rd. so i just rode 2nd cuz it wouldn't go into 1st anymore, then it stopped going into 2nd and i rode 3rd and decided it was best not to drive the car anymore. i just wanted to know if anyone knows what's wrong with the transmission, and had any suggestions. car is 1986 saab 9000 turbo manual, 131,xxx miles. thanks.