wilmax17

In order to get through inspection, I had to turn on my rear O2 sensors and I need to put on MIL eliminators on my 2005 mustang. I know that they don't make the eliminators for 2005+ gt's, but I know for a fact that cars manufactured in or before March of 2005 (which mine is) are still compatible with MIL eliminators from the '99-'04 body style. SO my question might sound very stupid but how many sensors in the rear do I need to put MIL eliminators on? Some people seem to say that there are three O2 sensors and others say that there are four. Do I need to put MIL eliminators on all 3 (or 4) sensors in order to clear the check engine light and pass OBDII inspection, or do I just need to put them on the two sensors off of my cats?

Thanks

wilmax17

I knew that was a dumb question... it looks like my car has one sensor upstream of the cats, another on the manifold, and two placed just downstream of the cats. The code that was thrown is about catalytic efficiency, so only the two most rear O2 sensors should need MIL eliminators...

Right?

Thanks again