rx7pl

i got no o2 sensor hooked up to my car. they are missing.What the car be fine to run with out the 02 sensors?can i run it like that?it99 4.6 auto
what should i do? what could o2 sensors cause problems?

MustangMafia

what do u mean u dont have 02 sensors? You mean you have an O/R Midpipe with no cats and arent running MILs?

rx7pl

i got x-pipe no oxygen sensors or mils

rx7pl

what should i do?

MustangMafia

Unless you cut them off, your car has 02 sensors. You mean your X-Pipe has no catalytic converters? If this is the case, you will need MIL Eliminators to turn off your check engine light. And I don't think there is any immediate danger running your car without these, but I think it can send your car into limp mods, which cuts fuel in timing, resulting in poor gas mileage and lower levels of performance.

rx7pl

how many mils do i need there is four o2 sensors

sprostang

2 mils for the rear 02`s.

rx7pl

so i can leave the front ones without o2?

sprostang

No. Your front o2`s go into your midpipe before the cats to read air/fuel mixture. They have to be there, without mils of course. The rear o2`s have to be in your midpipe as well. Mils need to be connected to them with an O/R midpipe or you can get a tuner to turn off the rear o2`s.

MustangMafia

no u dont need MIL's for your front 02 sensors.