engine light=oxygen deficiency??

[maximus]

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.

[hottcobra]

do you have BBK cats?

[maximus]

yea its a bbk catted x pipe

[hottcobra]

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

[maximus]

Quote: Originally Posted by hottcobra 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.

[hottcobra]

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

[Thomas91169]

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.

[maximus]

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.