albie444

hey guys i took my cat off not to long ago and now i have a check engine light...i tried a spark plug non-fouler which worked on my friends srt-4 but it didnt work on my cobalt...any suggestions.

Onyxd04Redline

HPT tuning to delete the 2nd 02 sensor.

Bika

iTrader: (3)

x2
you need to get the downstream sensor turned off in the ECU. find someone with HPTuners.

D4u2s0t

delete the code.

1stbluSS

**** it CEL's are standard operation on the cobalts

IT S A FEATURE

albie444

ok thanks guys

D4u2s0t

when you say you took the cat off, do you mean you got a new downpipe that didn't have a cat? or did you cut the stock one off and replace with pipe? but you did replace it with something, right? sorry to ask this question, but you didn't just cut it off and leave open pipes, right?

Rippin07

If you cant find someone with HPT, you can purchase a resistor block called an O2 cheater that sends a steady votage back to the VCM making it think the catalyst efficiency is good. Basically, the computer thinks you still have a Convertor and its working good. About 40 bucks is what I have seen them for.

KillerBee

who dont think they will not get a code if they take there cat off its normal for these days cars

D4u2s0t

+ rep for great grammar!!

but yea, it's pretty standard. almost anything will throw codes on these cars.

KillerBee

thanks i was in a rush when i said it but i think you got the point and thanks for the rep and rep+ back at ya

GreenPurgatory

lmao, agreed!