I replaced the oxygen sensor on Tuesday and I must say the old one was in horrible condition I replaced it with Bosch 13231 Oxygen Sensor, OE fit which now has the car when Idling it idles with no issues.
I replaced the Air filter with a Mann-Filter C 26 110/1 Air Filter, it was a pain to get everything out but it was needed and past due, the old filter had random junk in it and now its smooth running.
Also did some research while I was in class, which was where I did the changes since I'm studying to be a Mechanic we can do all the modifications in class as part of class work which is awesome since the teacher is a mechanic who takes 100% pride in his work as he was once a marine and worked on war vehicles.
Now what else should I replace?
I was thinking fuel filter as I have no idea when it was last replaced.
I also have an issue with my speedomter where the bulbs aren't all working as well as the fact that my RPM gauge was never hooked up which I'll try to do in class if anyone knows how difficult a job it may become.