1992 dodge dakota problem

I got a question for everyone. my torque converter is always on lock position. I start it idles perfectly but when put into gear it just stalls unless i give it around 2,000 rpm then it squeels the tires its a 5.2l v8 magnum i bought it because my 1985 s10 2.8l has no power and this truck has plenty of it just has some problems. but i was wondering if there is a fuse or a relay that controls the lockup just testing the waters before i start spending money on it also it has a error code 37 and 55 but 55 is just end of codes and i was wondering if error code is related to the lock up of the any help is appreciated thanks. And ive had alot of people tell me not to waste my time. But it is a good truck my cousin had it for years and just started locking up recently. and i really don’t think its the torque converter because once i get it going it shifts perfectly until i go to a stop or a red light then it just stalls on the stop.