Was planing on the mechanical o2 Fix today or tomorrow, and I got the Short version Foulers. I have researcehd this and read so much, and it has helped, but the one thing that was not made clear .....so here is the question to anyone that has done this fix.


Did you use the LONG or SHORT Foulers?

and of the one that you used, did it work or not?



Basically I am worried that the short ones may not work.....I hope I made sense?

 

https://www.evolutionm.net/forums/sh...d.php?t=114931

 

I grabbed the cheapest ones on the hanger.....they happened to be the short ones.....I have had them in the car for a few weeks now and no CELL. Either one will work.....they trick fok the computer into thinking the cat is there....just a slight change is all its looking for.

 

I used the long ones. It has been a month (about 1500 miles)and no light. I do have some rubbing issues though from the o2 sensor on the car.

 

I used 2 short ones with my stock cat back when I first put my DC downpipe on. Even with the stock exhaust it rattled but I was afraid to run only 1. When I put on the 3" cat back there was no way 2 would fit so I took my chances and only ran 1. That was about a month ago and about 800-1000 miles and no CEL whatsoever! It runs great! So I say go with 1 small one. That should only be about 3 bucks or so. You can't beat that.

 

For me nothing works. I used the O2 simulator - light is poping on aprox. 100 miles after the computer reset. I used the foulers - same thing, light comes back on. Run out of ideas what to do. I have been riding with CEL for the past 10K miles. drives me nuts. If anyone has any ideas I'm more than welcome to try them out just to get rid of the light.

 

BTW, here are the threads I started about the issues that I'm experiencing with the CEL light
https://www.evolutionm.net/forums/sh...d.php?t=118050
https://www.evolutionm.net/forums/sh...d.php?t=138850

 

Have autozone/checkers scan the code, it might not be from the rear O2 sensor

 

you leave the simulator on there when you did the mechanical fix?

have you actually pulled the codes, or do you assume its the cat defficiency code? i bet you are throwing slow response code from that o2 sensor because of the sim.

 

I used one LONG. If you use the SHORT you may need two. I've been CEL-free for a couple months; that includes track events, highway, and city driving.

Dave

 

yes I did check the codes it is P0139: Heated Oxygen Sensor Circuit Slow Response

I tried O2 sim on its own, then O2 sim and foulers, and then foulers without O2 sim. Doesn't matter what is the combination it always kicks me with the code.

Question though, should I mount the rear O2 sensor in the test pipe bung instead of cat back when I'm using O2 simulator??

 

don't use the simulator...half of them don't work.

take the sim off, rewire the o2 back to stock. use only 1 fouler and see if that works. I have 2 short foulers and they work perfectly.

Im guessing something is screwy with your wiring.....

 

HELP PART NUMBER 42002.

 

where do u buy these foulers?

 

advanced auto, autozone......anywhere really