Hesitation and codes P0031, P0037, P2074, P0507 and P0633

I recently purchased this car. The owner says that she recently had the PCM replaced (at non-Chrysler dealer). The car hesitates and stalls when driving at times then when my foot is off the accelerator it will speed up out of nowhere which was a issue before purchase as well as she mentioned a fuse. The malfunction light is on, I went to AutoZone at first and it came back with four main codes, the O2 sensors P0031 P0037, P2074, P0507. I had gotten the O2 sensors replaced with a mechanic and before that he said that the codes were the skim key needs to be programmed P0633 and the O2 sensors. After replacing the sensors the car still stalled and I went to a new shop about 2-3 weeks after their diagnostic brought back the same codes the P0633 and also the sensors even though they were just fixed. I mentioned to them that the sensors were already replaced recently and they did see signs of my new sensors being installed they ran some more test and nothing else came up. Also, I noticed there is an issue where when I turn the car on and off at times (due to the stalling) the gas needle will change position.I am not sure if it is the fuse or the key or the moderately new PCM causing these issues. I'd like to get some idea of what could causing the problem before I have to spend out hundreds of dollars and still not have the issue fixed.