I ran into the same problem with my 3.5. I just had to get my sensor extended. Is that the problem you have or is there just no where to put the sensor at all? You can go to an auto parts store and they can turn off the check engine light. but you need to disconnect the negative cable on your battery for a minute after they do this to make sure the light doesnt come back on. if the light does comeback on then that means your ecu has gone into "limp" mode and is basically saying get me home and fix me. so if you were thinking about just saying screw it and leave the sensor out....bad idea