Im not sure what there called, but does any one know or have experience with the devises you plug into ur o2 sensor and it mimics what the o2 sensor would being telling the computer. Im looking into one for my rear one on a 98 xj . But idk much about them or if there a good idea or bad. opinions welcome

 

o2 sim

 

yep, o2 sensor simulator, fail a handful of them a year for inspections, guess people don't think we really check to c i cat is there.

 

I see a coming...

 

MAGNUM TUNING.COM paste this site into your search bar and learn all about them,This is a legal site

 

are you talking about using the spark plug non-foulers as O2 spacers?

http://forums.evolutionm.net/evo-how...ouler-how.html

 

Use a diode. My buddy gutted his cats and used a diode on the wire of the 02 sensor

 

how did he use a diode?, and the spark plug non fouler is exactly what im talking about. in that build doe she use two non foulers or just one

 

he cliped the wire on the o2 sensor that goes back to the pcm and wired in a diode. reads like normal

 

Well im thinking the non foul looks like a good idea. how do you tell which wires go to and from the computer

 

My 02 circuit was giving me trouble on my 1998XJ.

I found a post on some forum, may have been this one.

There is a 15 amp "unmarked" fuse in the box near the battery.

Mine was the bank of the smallest fuses. It was on the back row, second from the passenger side. Popped a new one in & problem is fixed. This was over a week ago & still no check engine light.

 

as for the spark plug non fouler, you use 2 of them, drill out one of them with a 1/2 drill bit, thread that one onto the oxygen sensor, then thread the non-modified one onto the modified one. It worked on my buds 01 Civic. He had a p0420 Cat efficiency below threshold. O.E. cats where on back order and he waited til the last minute diagnose it. He threw the non foulers in there to pass emissions and til the new cat showed up.

 

high flow cats... 79 bucks..... jegs... or summit... O2 sensors are real cheap at junk yards...

 

Boy talk about doing it the hard way and then wait to burn out your computors go to the website listed above and do it right replace your o2 senser with the right dud.

 

so the last thing i wanna do is fry my cpu. what wed site r u suggesting? the magnumtunning.com?