How TO: CEL/MIL Eliminator!

[Kooldino]

Pics of your mechanical fixes??

 

[Pheonix]

Pics of your mechanical fixes??

nah, just pics of the resulting O2 value graphs
i don't have a stock one to show the difference

edit: here's a pic of my modified O2 sensor, looks kinda discrete

 

[BaD_HeX]

Picture of the pair I purchased

RadioShack Part #s:
271-1356 :: 1-Megohm Resistors (1/4 watt - 5% tolerance)
272-1055 :: 1.0uF Metalized-Film Capacitor (radial leads 250WVDC max)

UPDATE:
After 144.3 Miles I threw a CEL. Going to try a smaller resistor.

 

[carbonkid]

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RadioShack Part #s:
271-1356 :: 1-Megohm Resistors (1/4 watt - 5% tolerance)
272-1055 :: 1.0uF Metalized-Film Capacitor (radial leads 250WVDC max)

UPDATE:
After 144.3 Miles I threw a CEL. Going to try a smaller resistor.

 

[Replica]

Mine came back on after about 300 miles....

 

[Pheonix]

reading on...

 

[Replica]

My gas mileage went to s*** with the CEL fix...weird....

 

[MsProtege]

i have followed this thread to a t and never got it to work, (i am an electrictian on planes and solder all the time) but after 100 miles or so i pop a cell and when i have it read it is for the 2nd o2 sensor... i have been just living with it and dont get worried until my cell starts to flash...... i will take a pic of how mine is setup later to see if anybody can tell me what i did wrong....
rob

Have you tried to recet the ecu yet? if not that may help.

 

[PFUNK5]

by the way guys, Karl here---won't be on all the time--computer is dead, at my uncles house. By resetting the computer via removing the ground on the negative terminal of the battery will only reset the computer, BUT NOT clear the fault code in the computer. Your computers history will still have the fault CEL programmed in. YOu need an OBDII scanner to completely clear out the CEL with the fix.

 

[DiS]

by the way guys, Karl here---won't be on all the time--computer is dead, at my uncles house. By resetting the computer via removing the ground on the negative terminal of the battery will only reset the computer, BUT NOT clear the fault code in the computer. Your computers history will still have the fault CEL programmed in. YOu need an OBDII scanner to completely clear out the CEL with the fix.

What Karl said about OBDII scanner. You can pick one up at Pepboys. They got 2 or 3 versions. I got the cheapest one (100 US dollars) still works wonders, heh. P.S. My header is off and sold.....

 

[BaD_HeX]

Riddle me this:

My CEL came on at 144.7 miles (this is with the fix from my previous post). Today, aprox 100 miles later it went off without my changing anything...

 

[carbonkid]

How come my CEL comes on even though I have a soldered in MIL eliminator? Do they burn out? My o2 sensor (rear one of course) is totally black last time I looked at it (likely normal). I am so sick of this that I might try to return my APEX catless DP and get the catted one. any thoughts? Oh, and I have done the spark plug arrester too, and I still get the code about the rear O2 being weak or no signal.

 

[carbonkid]

they are called spark plug anti-foulers. i have them on my msp w/ corksport exhaust. use the 18mm ones and just drill out the bottom of one of them with a 1/2" drill bit (do not cut it off) and screw them into each other. it creates a chamber outside the main exhaust fow for the o2 to get a proper reading. suby guys have been doing this for a while with no cel/mil.

I tried this in addition to my MIL elim, had the car reset (batt disconnect, not via OBDII scanner) and I still get "p0140 is no circuit activity detected", WTF!?

I hate CEL/MIL issues, and am considering getting the APEX cat DP, please someone talk me out of this craziness!!

 

[KpaBap]

You have to use less resistance. Like 750-800k ohms.

 

[carbonkid]

I tried this in addition to my MIL elim, had the car reset (batt disconnect, not via OBDII scanner) and I still get "p0140 is no circuit activity detected", WTF!?

I hate CEL/MIL issues, and am considering getting the APEX cat DP, please someone talk me out of this craziness!!

I have the prefab MIL Elim from apex, not a homemade one.

 

[Zivman]

I have the prefab MIL Elim from apex, not a homemade one.

Are you sure you wired it correctly? We installed this on Tom's car (boomergt) and have had ZERO CEL. I have a datalogger that I can run on your car when we come help with the installs tomorrow and we can check what that rear sensor is reading. I have these MIL eliminators one EVERY car I own, the '01 stratus, the '04 Z, and the '98 protege- the protege one I just installed last night and drove about 20 miles on it without an issue. the car isn't modded, the OEM cat just burnt out and now throw codes as a result. The MIL eliminator I wired in was for a WRX/STI and was only a single wire one and it still works.

We'll get your CEL light issues resolved, don't worry!

(this is Tom's buddy Aaron by the way)

 

[Zivman]

Are you sure you wired it correctly? We installed this on Tom's car (boomergt) and have had ZERO CEL. I have a datalogger that I can run on your car when we come help with the installs tomorrow and we can check what that rear sensor is reading. I have these MIL eliminators one EVERY car I own, the '01 stratus, the '04 Z, and the '98 protege- the protege one I just installed last night and drove about 20 miles on it without an issue. the car isn't modded, the OEM cat just burnt out and now throw codes as a result. The MIL eliminator I wired in was for a WRX/STI and was only a single wire one and it still works.

We'll get your CEL light issues resolved, don't worry!

(this is Tom's buddy Aaron by the way)

If it is a 140 code, it is a bad sensor or bad connection, not an actual catalyst below threshold code. Did you bang up the sensor when you took our/reinstalled it. They are somewhat sensitive and the ceramic inside breaks somewhat easy. I have an extra o2 sensor that we can try if it doesn' seem to be working at all

 

[boomergt]

Hey John. I think you have one of two problems.

Like Aaron said it could be a bad connection, otherwise when you took the O2 sensor out you could have damaged it.

We will get it taken care of on Saturday.

 

[carbonkid]

Hey John. I think you have one of two problems.

Like Aaron said it could be a bad connection, otherwise when you took the O2 sensor out you could have damaged it.

We will get it taken care of on Saturday.

sounds good see ya tomorrow....

 

[nezumi]

My brother has a 03 dodge neon and we just installed his headers in and we first had a cel, but then my friend had a adapter for the O2 sensor. The cel went away