Service Engine Soon Light, Helllllllpppppp!!!!!!!!

COBRAon18s · 03-21-2002, 07:57 AM

I just put in an offroad hpipe in my 99 cobra a couple days ago, it works great. I ordered Mil Eliminators from www.mileliminators.com I have 4 o2 sensors but the guys at ramchargers told me i only need the mileliminators on the front two sensors closest to the headers. So i did that and everything went fine. I had no check engine light for 3 full days. Then all of a sudden, i was driving and the check engine light came on. Is it possible i need two more of those elimiators for the back o2 sensors or is it possible that the ones that i put on just work. I made sure all the wiring was done correctly exactly with the diagram and now that stupid yellow light on my dashboard is pissing me off, any suggestions will be very helpful, thanks!!!

FoxBuilder · 03-21-2002, 08:41 AM

I have a 2001 GT and I put the MIL Eliminators on the back two O2 sensors and so far no light. I don't really know if the Cobra would be any different.

91LX2Bfast · 03-21-2002, 09:11 AM

I am pretty sure they gave you bad info. The MIL elims. go on the BACK sensors.

SLOW 97 · 03-21-2002, 11:38 AM

Yeah I can back up what 91LX said. They do go on the back sensors (The ones on the H-pipe). I don't know why it would work for three days though.

Hammer · 03-21-2002, 06:09 PM

Actually, I've seen that light come on WEEKS (1 or 2) after an offroad install is done. Why? It's a mystery....

03-21-2002, 07:57 AM	#1
COBRAon18s Registered User Join Date: Mar 2002 Posts: 36	Service Engine Soon Light, Helllllllpppppp!!!!!!!! I just put in an offroad hpipe in my 99 cobra a couple days ago, it works great. I ordered Mil Eliminators from www.mileliminators.com I have 4 o2 sensors but the guys at ramchargers told me i only need the mileliminators on the front two sensors closest to the headers. So i did that and everything went fine. I had no check engine light for 3 full days. Then all of a sudden, i was driving and the check engine light came on. Is it possible i need two more of those elimiators for the back o2 sensors or is it possible that the ones that i put on just work. I made sure all the wiring was done correctly exactly with the diagram and now that stupid yellow light on my dashboard is pissing me off, any suggestions will be very helpful, thanks!!!

03-21-2002, 08:41 AM	#2
FoxBuilder Registered Member Join Date: Sep 1999 Location: Columbus, Ohio Posts: 233	I have a 2001 GT and I put the MIL Eliminators on the back two O2 sensors and so far no light. I don't really know if the Cobra would be any different. __________________ 2001 Mustang GT 4.6L w/AODE: K&N FIPK kit, 87mm MAF, 19lbr., H-Pipe, Mufflers, 2.73, stock rubber, (4) custom programs by me using Autologic chips. Best E.T. 13.890@100.0mph 1984 Mustang LX 5.0L w/T-5: BOSS, TFSTW, Vic. Jr., BG, trick stick.

03-21-2002, 09:11 AM	#3
91LX2Bfast Registered Member Join Date: Dec 1999 Location: Warrington, PA Posts: 694	I am pretty sure they gave you bad info. The MIL elims. go on the BACK sensors. __________________ '97 T-bird LX 4.6L 2V, auto SVO heads/intake, Vortech T-trim, front mounted intercooler, blower cams, Cobra crank, Manley H-beam rods, JE pistons, Aeromotive fuel system w/ 42# injectors, and much more No times yet

03-21-2002, 11:38 AM	#4
SLOW 97 Registered Member Join Date: Feb 2002 Location: Arlington Heights,IL Posts: 231	Yeah I can back up what 91LX said. They do go on the back sensors (The ones on the H-pipe). I don't know why it would work for three days though. __________________ '97 Laser Red GT Coupe Stock 2V (Pulled Silencer) 4R70W Automatic Ripped off a BLISTERING 15.37@90MPH With a 2.21 60ft Just Installed- K&N Air Filter Coming Soon...... -4.10's -Flowmaster A/T or Magnapack Cat-Back

03-21-2002, 06:09 PM	#5
Hammer AKA "Dr. Evil" Join Date: Feb 1999 Location: South Fork Ranch Posts: 1,721	Actually, I've seen that light come on WEEKS (1 or 2) after an offroad install is done. Why? It's a mystery.... __________________ Uncle Sam "What the hell is up with all the gauges? Calling Captain Kirk, your ride awaits... Phasers on stun...."

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Rare Mustangs....Got One?	1969Mach1	Blue Oval Lounge	22	09-25-2010 04:59 AM
Check Engine Light Question.	5ohCOUPE	Windsor Power	8	12-25-2002 12:20 AM
Check engine light after steeda pullies / timing adjuster!! HELP!!	MineralGray02K	Modular Madness	1	09-29-2002 01:11 AM
Information on Check Engine light	hssssssss	Modular Madness	1	10-18-2001 11:12 PM
Now What??!! - Check engine light just started coming on... please help.	AxemanZZ	Windsor Power	4	02-01-2001 03:00 PM