well the o2 sensor went out and well frankly its not coming off. i have pushed and pulled and budged and put some of that penetraitor fluid on it and wont budge one freakin bit. i am wondering if the damn things ever been changed. anyone have any ideas as to how i can get it off? car is 88 csxt with mitsu turbo and 3 wire o2 sensor. someone please help hell come to the house and help me if you can lol.