I just got through troubleshooting an idling issue I've been having. after screwing around under the hood for a while cleaning some stuff, I ended up changing the fuel pump which fixed the problem. In the process of fixing this, I unplugged and plugged back in a lot of different wires and also had a dead battery for an extended period of time. now that the idling problem is fixed, I have no heat, air will only come out of the defroster, and the oil temp won't work. the channels I had set on the radio are also gone, which is leading me to believe that something just needs to be reset. I broke and then changed the heat valve trying to get leverage on my O2 sensor, but considering nothing electrical hooks to the valve I don't know how it could be part of the issue... did I short something out? does the computer just need to be reset? if so, how do I do it?
1998 Ford Ranger
2.5L 153CI L4 FI VIN: C