I just went to the dealer because my CEL was on and my friends equipment couldn't find what it was.

The dealer told me 2 things were wrong with my car: the rear O2 sensor (after cat converter) was bad and needed to be replaced and my wheel well liners were missing (like that when i got the car) so my stock air filter was getting wet.

According to this thread the O2 sensor that I have out doesn't really matter:

https://www.cobaltss.net/forums/2-0l...2/#post6855268

From what i just read above would it be safe to assume that i would be fine without spending the $340.05 to replace the sensor???

And as for the liners im just going to buy:
07 2007 Chevrolet Cobalt Inner Fender Well - Body Mechanical & Trim - Action Crash, Left - Driver Side, Right - Passenger Side - PartsGeek

OR

GM Parts Direct: 15289944 - LINER

Just to be safe and itll help protect my injen when i reinstall it

 

bump

 

$340 to replace the secondary o2 sensor? It'll take you 5 minutes, provided the current sensor wants to come out. $10 for o2 sensor remover tool, maybe $100 for the sensor.

To answer your question, secondary o2 sensor will not affect performance. It'll just throw a code, and your DIC MPG rating will go down, but that's it.

Fender liners look fine. Get a hydro shield for your air filter as well.

 

Thanks. That's what I wanted to hear. Once i get those liners I'll put on the Injen again and the hydroshield. Screw the O2 sensor

 

I think i have an extra working 02 laying around if ya need it but i got a new one at autozone for i think sixty bucks. Go to a junkyard and get a wheelwell!!

No beed to soend such rediculous amounts for simple crap like this

 

Yeah im learning how to deal with the dealer. First time owning my own car. After i learned i couldve spent significantly less than $700 for the stock intake ive been much more wary of letting the dealer handle things.

As for the wheel well i tried all my local junkyards. They all said they didn't have any cobalts.

Just laying around you say?

 

OUCH. $700 for the plastic hunk of junk? Damn.
They usually go around $80 to $120ish shipped on these forums.
ZZP 3" intake would've costed you $220 shipped brand new from them, and is probably the best intake for the LSJ, which is what I'm assuming you have.

check car-part.com for those liners just to make sure. No need to buy brand new ones, unless you absolutely have to.

 

Yeah I still have nightmares.

Actually when i got the car it came with an Injen.

I got the liners from rockauto.com for like 12 each so not bad.

 

Not bad at all. I actually forgot about rockauto. Good thing you looked.

Other places for OEM parts I would remember are Crate Engine Depo, GM Parts Direct, and you already know Rock Auto.
Then car-part.com for anything used around your area.