I hit the curb a few times with my header becuz it hangs down so low. Ive read alot of post but couldnt seem to find a solution to my issue. When i hit the curb my cel came on and i replaced the bent o2 sensor with a fat bosch sensor(pos). i replaced it again with a motorcraft sensor still didnt work. i done some diagnosing an i have no power going to my front o2 but i have power going to the rear. Any idea whats going on? Im stuck.