engine light=oxygen deficiency?? - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 07-20-2007, 04:25 PM   #1
Registered Member
Regular
 
maximus's Avatar
 
Join Date: Jul 2006
Region: Pennsylvania
Posts: 430
Question engine light=oxygen deficiency??

So about 2 days ago I noticed my check engine light was on. I could get it checked by a guy who works in the shop where my dad works but that wont be till late next week. So I went to auto zone for the free check and the tester read oxygen deficiency. The auto zone guy said it could be a problem with the cats and the o2 sensor. The car seems to run fine, but I know you can do damage to an engine w/o any change in sound or feel. I have bbk lt's and bbk x-pipe that were put on 2 mnths ago. I will be taking it back to the shop that did the work on monday, but does anyone have any suggestions as to what it could be? thanks.
__________________
maximus is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-20-2007, 10:23 PM   #2
Registered Member
Regular
 
hottcobra's Avatar
 
Join Date: May 2007
Region: Louisiana
Posts: 2,638
Re: engine light=oxygen deficiency??

do you have BBK cats?
__________________

2006 Mustang GT lots of mods ex wife has it
1979 corvette stingray #'s matching 47K org. miles
1970Chevelle SS 454 big block Old School 500hp Sold
hottcobra is offline   Reply With Quote
Old 07-20-2007, 10:42 PM   #3
Registered Member
Regular
 
maximus's Avatar
 
Join Date: Jul 2006
Region: Pennsylvania
Posts: 430
Re: engine light=oxygen deficiency??

yea its a bbk catted x pipe
__________________
maximus is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-20-2007, 11:12 PM   #4
Registered Member
Regular
 
hottcobra's Avatar
 
Join Date: May 2007
Region: Louisiana
Posts: 2,638
Re: engine light=oxygen deficiency??

on some cars the comp. doesn't like aftermarket convertors. just depends on how sensative your comp. is. if thats the case you will need a tune with rear o2 sensor delete. or MIL eleminators
__________________

2006 Mustang GT lots of mods ex wife has it
1979 corvette stingray #'s matching 47K org. miles
1970Chevelle SS 454 big block Old School 500hp Sold
hottcobra is offline   Reply With Quote
Old 07-20-2007, 11:16 PM   #5
Registered Member
Regular
 
maximus's Avatar
 
Join Date: Jul 2006
Region: Pennsylvania
Posts: 430
Re: engine light=oxygen deficiency??

Quote:
Originally Posted by hottcobra View Post
on some cars the comp. doesn't like aftermarket convertors. just depends on how sensative your comp. is. if thats the case you will need a tune with rear o2 sensor delete. or MIL eleminators
its just wierd, cuz ive had them on for atleast 2 mnths and it just randomly poped up.
__________________
maximus is offline   Reply With Quote
Old 07-20-2007, 11:21 PM   #6
Registered Member
Regular
 
hottcobra's Avatar
 
Join Date: May 2007
Region: Louisiana
Posts: 2,638
Re: engine light=oxygen deficiency??

if thats the prob. it can be that random. thats why I think everyone needs rear o2 sensor delete.
__________________

2006 Mustang GT lots of mods ex wife has it
1979 corvette stingray #'s matching 47K org. miles
1970Chevelle SS 454 big block Old School 500hp Sold
hottcobra is offline   Reply With Quote
Old 07-21-2007, 07:21 PM   #7
Legacy Member
Legacy
 
Thomas91169's Avatar
 
Join Date: Sep 2003
Region: California
Posts: 2,280
Send a message via AIM to Thomas91169
Re: engine light=oxygen deficiency??

aftermarket high-flow cats are only for legality purposes (ie no fines for running no cats), high-flow catalytics will NEVER pass the sniffer. been there, done that.

you either need a set of MIL's or you need to disable the rear o2's completely in the tune itself, which if you dont have a programmer or whatnot, youre basically stuck with picking up a set of MIL's. what happens is the rear o2's function is to check for operation of the catalytics, they correlate data with the upstream (front) o2's and discern wether the catalytics are working correctly or not. sometimes they never realize it, other times they pull the CEL right off startup if you run no cats or even high-flow cats, there are alot of variables in this situation. something as simple as a few degrees change in weather, barometric pressure, etc., have been enough for the ecu to now realize whats going on.

Try to get us the actual codes (like P0034) or whatever. "Oxygen Defiencency" doesnt sound like the standard oxygen sensor obdII description.
__________________
-Thomas-

1998 Eclipse GST Spyder - 14b turbo | 3" Catback | Evo8 BoV | 170fwhp if that

2003 Redfire Cobra - 448whp/435wtq - Sold
Thomas91169 is offline   Reply With Quote
Old 07-22-2007, 12:39 AM   #8
Registered Member
Regular
 
maximus's Avatar
 
Join Date: Jul 2006
Region: Pennsylvania
Posts: 430
Re: engine light=oxygen deficiency??

thats what the pos meter read at auto zone. its rediculously generic, no wonder its free. but im going to the shop on monday bcuz they stand by all of the parts and installations they do, which is pretty sweet. so we'll see what they have to say.
__________________
maximus is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
The Service Engine Light Soon light is on!! HELP! punisher0822 1996-2004 Mustang GT 11 07-15-2010 11:15 PM
oxygen deficiency=dyno tune maximus 1996-2004 Mustang GT 7 07-30-2007 10:10 PM
engine light on 00stang3.8 General Car Discussion 5 11-11-2006 11:52 PM
my engine light... dark Pre-2005 V6 Mustang 13 08-02-2003 11:02 AM
my engine light... Rellik Pre-2005 V6 Mustang 0 08-01-2003 07:18 PM

» Like Us On Facebook



12:23 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.