When i put in my new motor and trans the knock sensor's plug-in was broken from where the previous owner took out the old motor. the sensor is in the block, but not plugged in. the sensor was like $150 or so new and i didnt have the cash to put out on it, so i have a few questions. will this cause any problems? and will it make my car run any different? because i thought i remember hearing something about it maybe throwing your car into a "safe mode". but i dont remember exactly. thanks.