I'm fighting this battle for a year already and I'm still loosing it. Let me start by saying on what type of TBE I have. It is a RNR downpipe with O2 eliminator, Buschur's Test pipe and catback. I have posted before about this issue and my fight with the O2 simulator, here is the link (with pictures and all description on the O2 Sim troubleshooting) https://www.evolutionm.net/forums/sh...d.php?t=118050

BTW, I'm getting a "P0139: Heated Oxygen Sensor Circuit Slow Response"

Since I was not getting anywhere with that I decided to put in the spark plug antifoulers in and see what will happen then. I was a very happy man until 110 miles hit my odometer. The stupid light came on again. So now, the O2 simulator doesn't do its job, and the same goes with the antifoulers. My question to you is:
Are any one of you in the same boat as I'm, that no matter what you do nothing is working? What else can I do to have this CEL go away, it drives me up the wall right now. Is it possible somehow to remove/block this code permanently from the computer?
Tuners, gurus, vendors, users HEEEELLLLLP .... HEEEELLLLP

 

I don't have a cat or O2 sim and still haven't thrown a code. Go to an auto parts store, get an 18mm spark plug anti fouler drill out the center to 1/2in. Use this as a spacer. Works great. Most O2 sims are junk.

Edit: oops just read the whole post. Use 2 of them.

 

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

 

I think some tuners will soon be able to make this code go away with a flash. Works is working on it currently.

 

Even Buschur said the Evo is one , if not, the hardest car to delete CELs off of, particularly the CEL for test pipes/HF cat.

I get one for my HF cat on my turboback, but it comes and goes... moody beaytch.

 

dryad001 and burningmoney97, currently that is the setup that is installed in my car. Two spark plug anti foulers and one of them is drilled. Still not good enough, as I mentioned above after 110 miles of happy driving this thing came back.

Any more solutions, updates, fixes ??????????

 

Actulally I have a combination of both now, 2 antifoulers and the O2 simulator running simountaneously (I think I spelled that right)

 

try it with just the 2 antifoulers

make sure the sensor is clean
dirty=

clean=

if it still comes on you will probably just need a new sensor

 

Great, I'll try to clean it first and see how it works. But even if I will get the new sensor, still with the time it will get dirty again giving me the same problems is in it?? What do you tink ??

 

Go buy 18mm anti foulers, it will cost you about 4 bucks and it WILL work. This is what I run (no cats) and I haven't thrown a code yet.

 

you sure this isnt your front 02 sensor? If i remember correctly i was pulling this code and a p0171 and the problem was the front 02 sensor which was damaged during and 02 housing install. I fixed it and it went away.

 

I'm only getting P0139 code.

 

I do have anti foulers installed. The only thing is that I have the O2 simulator hooked up as well. My next step is to disconect the O2 sim and leave the anti foulers on their own and see what will happen.

 

is there anyone else beside me with a similar problem, or am I the only one ?????

 

Hey,

Sorry to see this happening, and No I haven't seen the issue...

Was doing some research for you though hope this can offer you some additional help...

http://www.obd-codes.com/trouble_cod...1-sensor-2.php