I just put a new coolant temp sensor in my 88 325i and now its throwing the code for coolant temp sesnor? Just a couple of days ago it was throwing the code for o2 sesnor even after I replaced it? I ordered a new dme it hasn't came in. I was just wondering why in the world would my car throw all these codes on the new parts? If you know anything please let me know. Just trying to learn about my car.