How TO: CEL/MIL Eliminator!

acidbbg · 02-20-2004, 02:19 PM

PLEASE MAKE THIS A STICKY or Locate to the How To!

I have seen lots of questions about how to make your own MIL/CEL Eliminator..

Well its really simple!

Tools Needed:
Wire Cutters
Soldering Iron
Solder
Electrical Tape
1-M Ohm Resistor ($1 at Radio Shack)
1-uF Capacitor($1 at Radio Shack)
Adjustable Wrench

Step1:
-Pop Open the Hood and get a look at the 2nd Oxygen Sensor
-There is a clip..Push the clip in and pull out the Male-Female Connection
-Using Adjustable Wrench Remove the Oxygen Sensor

Step2:
-Go somewhere you can use your Soldering Iron
-Cut the Blue Wire
-Remove the Sheathing on the White wire to expose the Copper Wiring Underneath
-Grab you 1m Ohm resistor and solder it into the bluewires you cut earlier
-Grap your 1uF capactiro and solder it into the wire that you unsheathed/exposed & than solder it on the connector side as show on the Pic!
-Grab your electrical tape and make sure you do a good job covering all the conections

Step3:
-Reinstall using the reverse directions in step 1!

Typical install time is 15-20min depending on your ability to solder!

Chas

acidbbg · 02-20-2004, 02:40 PM

*Quick note, You might need to reset the ecu. But i did not have to!

how to reset ecu:
-Remove negative terminal to the battery
-wait 5 minutes
-reinstall the negative terminal to the battery!

Most common reasons to do this:
Install of a header that removes the 1st cat or both.
Turbo back that removes 1st cat or both!

When you remove either of the cats the ecu picks up that 1 of the cats are reading inconsistency(sp?) in the exhuast gasses which causes the Check Engine Light!

Chas

Little Beavis · 02-20-2004, 04:31 PM

Nice work!

The other option is to lengthen the wires and place the second O2 sensor after the second cat, this too will get rid of the CEL. But if your car is gut-less, whoops, I mean cat-less, than this is the way to go!

Bigg Tim · 02-20-2004, 11:13 PM

I have my 2nd O2 behind my high flow cat and when it's real cold, I get a P0421 code saying "Warm Up Catalyst below threshold (Bank 1)". Would doing this get rid of this CEL??? What do ya think Beavis??? I only have the 1 high flow cat and a 3" exhaust.

acidbbg · 02-21-2004, 02:17 AM

Quote:

Originally Posted by Little Beavis

Nice work!

The other option is to lengthen the wires and place the second O2 sensor after the second cat, this too will get rid of the CEL. But if your car is gut-less, whoops, I mean cat-less, than this is the way to go!

Yeah..that's a good way to go..but for the price..it's worth doing..instead of having to lenghten wires and such!

Quote:

I have my 2nd O2 behind my high flow cat and when it's real cold, I get a P0421 code saying "Warm Up Catalyst below threshold (Bank 1)". Would doing this get rid of this CEL??? What do ya think Beavis??? I only have the 1 high flow cat and a 3" exhaust.

it should defeintely fix your code..i don't have any codes..and i have had this mil eliminator on my ride since the days i had a header!

Chas

noclue119 · 02-29-2004, 09:29 AM

what does MIL stand for

Bigg Tim · 02-29-2004, 10:37 AM

Malfunction Indicator Lamp. Also known as a CEL or the check engine light.

zmepro · 03-03-2004, 03:29 AM

i know this is old, but is this exactly the same as the APEX MIL eliminator, what exactly does it to electricly to the system? is it reversable?

acidbbg · 03-03-2004, 02:11 PM

Quote:

Originally Posted by zmepro

i know this is old, but is this exactly the same as the APEX MIL eliminator, what exactly does it to electricly to the system? is it reversable?

This is absolutley reversable(sp?)...It's just like the apex mil eliminator..but without the extra $$$ associated with purchasing it!

Basically what it does it tells the ecu that everything is normal..aka the car is not running rich...

Chas

zmepro · 03-03-2004, 02:14 PM

what does the ecu look for? temp? oxygen level? doesn't that change? or is it a constant thing (on/off) or is it variable?

acidbbg · 03-03-2004, 02:18 PM

Quote:

Originally Posted by zmepro

what does the ecu look for? temp? oxygen level? doesn't that change? or is it a constant thing (on/off) or is it variable?

Basically the ecu compares the 2 oxygen sensors..to tell if it needs to add more fuel..or subtract fuel..or to throw a cel light..

Basically when you remove the 1st cat..the 2nd oxygen sensor will notice that there is alot more emmisions coming out...so by using the mil/cel eliminator..you trick the ecu into thinking that everything is ok!

Chas

zmepro · 03-03-2004, 02:21 PM

so if i didn't have the MIL it would cut fuel or run too rich?

mrpopnfresh · 03-03-2004, 03:03 PM

Thats a good question zmepro, I've been wondering the same thing for a while.

Acidbbg, great how-to, I'm going to try this one tonight!!

acidbbg · 03-03-2004, 04:10 PM

Quote:

Originally Posted by zmepro

so if i didn't have the MIL it would cut fuel or run too rich?

Basically it will just throw the cel...It has been said that it would cause the car to run in limp mode(car runs really rich..to prevent any further damage)..but it has never been proven!

Chas

Emode · 03-03-2004, 04:20 PM

i think i remember a thread where someone had a a/f guage readings while the CEL was on and it was richer.
I also have compared milage on a trip with and without CEL and i do get terrible gas consumption with it on.

02-20-2004, 02:19 PM	#1
acidbbg ZoomZoomX3 Donated: $5 Join Date: Aug 2002 Location: Central New Jersey Posts: 3,908	How TO: CEL/MIL Eliminator! PLEASE MAKE THIS A STICKY or Locate to the How To! I have seen lots of questions about how to make your own MIL/CEL Eliminator.. Well its really simple! Tools Needed: Wire Cutters Soldering Iron Solder Electrical Tape 1-M Ohm Resistor ($1 at Radio Shack) 1-uF Capacitor($1 at Radio Shack) Adjustable Wrench Step1: -Pop Open the Hood and get a look at the 2nd Oxygen Sensor -There is a clip..Push the clip in and pull out the Male-Female Connection -Using Adjustable Wrench Remove the Oxygen Sensor Step2: -Go somewhere you can use your Soldering Iron -Cut the Blue Wire -Remove the Sheathing on the White wire to expose the Copper Wiring Underneath -Grab you 1m Ohm resistor and solder it into the bluewires you cut earlier -Grap your 1uF capactiro and solder it into the wire that you unsheathed/exposed & than solder it on the connector side as show on the Pic! -Grab your electrical tape and make sure you do a good job covering all the conections Step3: -Reinstall using the reverse directions in step 1! Typical install time is 15-20min depending on your ability to solder! Chas Attached Thumbnails __________________ All content created by this user is for entertainment purposes only. Current Mods: Wouldn't u like to know Last edited by acidbbg; 03-07-2004 at 01:47 AM.

02-20-2004, 02:40 PM	#2
acidbbg ZoomZoomX3 Donated: $5 Join Date: Aug 2002 Location: Central New Jersey Posts: 3,908	*Quick note, You might need to reset the ecu. But i did not have to! how to reset ecu: -Remove negative terminal to the battery -wait 5 minutes -reinstall the negative terminal to the battery! Most common reasons to do this: Install of a header that removes the 1st cat or both. Turbo back that removes 1st cat or both! When you remove either of the cats the ecu picks up that 1 of the cats are reading inconsistency(sp?) in the exhuast gasses which causes the Check Engine Light! Chas __________________ Sigs are visible only in your first post on a page. To change your thread display preferences, click here and enable 'Always Show Signature'.

02-20-2004, 04:31 PM	#3
Little Beavis 264 chipmunks at 12 psi 2001 MP3-T (#911) Join Date: Mar 2003 Location: Back in IL Posts: 2,231	Nice work! The other option is to lengthen the wires and place the second O2 sensor after the second cat, this too will get rid of the CEL. But if your car is gut-less, whoops, I mean cat-less, than this is the way to go! __________________ Magnaflow and Type S Mods: All the forged goodies, P&P head with comp valve job, P&P MSP exhaust manifold, T25 w/ 28RS wheel, CS PS downpipe/J-pipe/exhaust, KM FMIC w/ Greddy Type S, Quaife LSD, ACT organic clutch and PP, Mazdaspeed flywheel, CS SS clutch line, P&P intake - 2 injectors/runner, outlaw engineering intake spacers, EBC Sport rotors and red pads, NSN motor mounts, Mazdaspeed #3 mount (and NSN modification), Mazdaspeed Oil Cooler, Microtech LT-10s, J&S Safeguard with custom knock display, Greddy Profec B Spec II, 4 Greddy 52 mm electric gauges (boost, egt, fuel pressure, and oil pressure), custom SS mp3 console gauge pod, custom SS MP3 turbo heat shield, Injen CAI, Alpine 9815, MB Quartz in all corners, RF Power amps, cruise control, power moonroof and 20% tint all around.

02-20-2004, 11:13 PM	#4
Bigg Tim No more MP3 MazdaSpeed 6 Join Date: Jul 2002 Location: Phoenix, AZ Posts: 2,858	I have my 2nd O2 behind my high flow cat and when it's real cold, I get a P0421 code saying "Warm Up Catalyst below threshold (Bank 1)". Would doing this get rid of this CEL??? What do ya think Beavis??? I only have the 1 high flow cat and a 3" exhaust. __________________ Custom 3" turbo back exhaust, Fujita CAI, MPI reworked stock turbo, Blitz SBC-id EBC, HKS BOV, SU motor mount, RX-8 wheels and autoEXE "low down" springs MPI SW and key: go to post #56 and post# 94 for instructions http://www.msprotege.com/forum/showt...09#post2013109

02-29-2004, 10:37 AM	#7
Bigg Tim No more MP3 MazdaSpeed 6 Join Date: Jul 2002 Location: Phoenix, AZ Posts: 2,858	Malfunction Indicator Lamp. Also known as a CEL or the check engine light. __________________ Sigs are visible only in your first post on a page. To change your thread display preferences, click here and enable 'Always Show Signature'.

02-29-2004, 09:29 AM	#6
noclue119 Official Yinglish Speaker 2008 Honda Fit Sport (5-speed) Join Date: Jan 2004 Location: Atlanta, GA Posts: 3,009	what does MIL stand for

03-03-2004, 03:29 AM	#8
zmepro tra la la Protege5 Join Date: May 2003 Location: California Posts: 2,344	i know this is old, but is this exactly the same as the APEX MIL eliminator, what exactly does it to electricly to the system? is it reversable? __________________ MOCC MEMBER DISCLAIMER: All Mazda corporate employees, Mazda dealerships, Mazda service personnel or employees, family, friends, or acquaintances thereof: This in no way constitutes an admission or acknowledgement of tampering, modification, usage, or alteration of any vehicle in my possession or component thereof in such a fashion as to void, cancel, deny or otherwise refuse service on any service contracts, warrantees, or recall notices covering said vehicles. This and other posts submitted on this, or any Internet forum, under the screen names "zmepro" simply represent an attempt to gain acceptance from a peer group espousing cars of a high performance nature - especially those that have been altered to improve, enhance, or otherwise modify the automobile's natural characteristics. Any statements, claims, or graphical representations made that would constitute a violation of any contractual agreement are to be considered fictitious and not to be accepted in any court of law, or similar environment mediated for the purpose of dispute resolution.

03-03-2004, 02:14 PM	#10
zmepro tra la la Protege5 Join Date: May 2003 Location: California Posts: 2,344	what does the ecu look for? temp? oxygen level? doesn't that change? or is it a constant thing (on/off) or is it variable? __________________ Sigs are visible only in your first post on a page. To change your thread display preferences, click here and enable 'Always Show Signature'.

03-03-2004, 02:21 PM	#12
zmepro tra la la Protege5 Join Date: May 2003 Location: California Posts: 2,344	so if i didn't have the MIL it would cut fuel or run too rich? __________________ Sigs are visible only in your first post on a page. To change your thread display preferences, click here and enable 'Always Show Signature'.

03-03-2004, 03:03 PM	#13
mrpopnfresh INCUBUS!!! Potential Scammer! Join Date: May 2003 Location: So Cal Posts: 674	Thats a good question zmepro, I've been wondering the same thing for a while. Acidbbg, great how-to, I'm going to try this one tonight!! __________________ Banner by Sukegirl_mp3

03-03-2004, 04:20 PM	#15
Emode Strongestmanintheworld Donated: 4.20$ 2k3bmMsp938 Join Date: Feb 2003 Location: Wisconsin Posts: 1,738	i think i remember a thread where someone had a a/f guage readings while the CEL was on and it was richer. I also have compared milage on a trip with and without CEL and i do get terrible gas consumption with it on. __________________ MAZDA TEAM PWND BY LIFE

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