i actualy got the first sensor out yesterday with vice grips and a hammer... its just kinda hard cuz i only have ramps and i have about 6 inches between me and the underbody with which to work...

did some testing switching around the sensors and pulling the CEL code and ive limited the problem to being somewhere between the rear sensor and the first wiring harness it connects to... pretty sure its just a bad o2 sensor...

do i have the buy a sensor specifically for behind the cat? what i want to do is buy a new one and put it where the primary sensor is since that ones old and put the mil eliminator on the old one and move it to behind the cat... since the eliminator is giving the ecu false voltages anyways im thinking it wont make a difference if the sensor is old... as long as it works