So recently I've been experiencing when starting my car and taking off, before I pull out on the street, it dies out or the RPM goes down and then back up. I put some Seafoam in the gas tank and even in the engine oil hoping it would help. Not much has changed. I even noticed that when I was driving and putting the pedal down, it felt like I was forcing it, but still went. Finally, the engine light came on and it gave P0121 Throttle/Pedal position sensor A circuit range/performance. I'm new to all this and have been watching videos and reading forums, but this is a major thing for me. I'm eager but scared to do it, lol. Do I clean it first, hoping that is all it needs, or does it need to be completely replaced? I also had rats in the engine area, but was able to deal with that issue. I even though that maybe the rat did something, but I don't see any signs on the wires. Please provide some kind of feedback.