1999 Dodge Stratus

Transmission problem
1999 Dodge Stratus 6 cyl Front Wheel Drive Automatic

I REPLACED A TRANY IN A DODGE STRATUS WITH ONE OUTOF A SEABRING I PUT STRATUS SENCERS IN THE TRANY DO I NEED TO USE SEABRING SENCERS OR DOES IT MATTER AND IS THERE A TRANY COMPUTER AND WHERE IS IT LOCATED

WHEN I FIRST PUT THE TRANY IN I ONLY REPLACED ONE OF THE SENSERS AND WHEN TEST DRIVING IT SHIFTED DOWN REALY HARD WHEN YOU CAME TO A STOP SO I REPLECED THE OTHER ONE NOW THE TRANY WON'T SHIFT OUT OF FIRST AND ALL THE DASH LIGHTS COME ON