shut off

[jc95gt]

Okay my engine shuts off randomly while driving down the road...no idea as to what the problem could be..i ran the codes and came up with 121 which is the throttle positioning sensor...so went out and bought one as well as a new coil...car still dies randomly...also the idle sticks at around 1200 rpms after i let off the gas...
any ideas?

thanks

 

[jc95gt]

also after i installed the new coil and tps i re-ran the codes and came up with 111 three times which is pass....