yea i just got my car back from the body shop..its been sittin for 5 days in the cold and i am drivin it tonight normal and not beating on it i get out to go to the atm the car is still running and bam CEl i dunno what i could be and also it boosts fine and runs great btw its 15 degrees here anyone have any clue why this hapened

 

Goto Auto Zone in the morning and get it read

 

Not much anybody can help you with unless you can find out what the trouble code is.

Highly recommend you pick up a code reader from an autoparts place (like an Actron CP9125 OBD II PocketScan from Autozone - $69) . Read the directions on its' use and you can decipher any code to insure you're safe to drive if you can't get the car to a dealer for possible repairs. It also allows you to erase an intermittent code if you want to stop the CEL from reappearing due to an intermittent trouble code -- hopefully that's all you have....

 

Mac Tools has an extremely nice one, the size of a zippo for 59.99 I'd suggest

 

also i noticed today is that my charger is chattering..is this normal or no

 

i ot it scanned its the p0420 code catalyst efficiency below threshold (bank 1) the guy at autozone said it should go away after i run the tank of gas out or i coulda got moisture on the sensor from sittin in a warm shop to going to 10 degrees outside anyone have input on this

 

bump

 

P0420 Catalyst System Low Efficiency
From 2006 Cobalt Service Manual page 6-1592:
1. Inspect catalytic converter for
Dents
Severe dicscoloration
Internal rattle
Restrictions
2. Inspect Exhaust for
leaks
damage
loose/missing hardware
properly torqued HO2S (2nd sensor after cat)
3. Inspect HO2S for
grounded wire
damage

Did whoever read the code clear it for you? This one can be cleared in the event that it was a one-time set. If it doesn't come back it's nothing to worry about. Fuel with a high sulpher content can cause this DTC too.

 

yea it went out tonight i put mobil in it now it run s better thanks

 

Here is an idea. Instead of the $60 or so for the reader, get an Aeroforce for around $230. You can read the codes, clear them and monitor a whackload of things going on with the car.

 

it came back on again haha same code prolly the shitty gas still gotta put some better stuff in it when it gets empty

 

Even better. Get the Interceptor in this Group Buy for $200.
https://www.cobaltss.net/forums//showthread.php?t=40327

I would get it checked by the dealership. You may be having a cat go bad which can destroy your catback if it lets loose.

 

i dont think its the cat the guy at the dealership said it could be of bad gas...it went off early tonight and came back on when i got on it a lil bit

 

I manage a collision center in Texas and can tell you that one of two things are wrong with it.

(1) The oxygen sensor by the exhaust manifold is bad. Depending on where the impact was it could be accident related.

(2) Your catalytic converter has died. If that is the case, it is covered under warranty. All emissions components on every car sold in the United States must be covered for 100000 miles.


Hope that helps

 

well i take to the dealer wednesday to get fixed now there is something in the muffler rattlein like a stone or a sensor haha

 

Let us know the outcome. Thanks

 

took it to the dealer today and here is what is wrong:

Water got into the airbox which caused the MAF to foul, Spark plugs are shot, Cat is shot, and muffler is shot...

i get it back tomorrow

at least it is all cover by gm warenty..

btw gm put out a bulletin about this so if your exhaust is rattlein and your car feels doggy..take it there asap

 

Rain Water? Is your airbox all stock? Mine has drain holes in the bottom of it to prevent water from collecting -- was your's all stopped up?

 

yes my airbox is stock..basically i dunno how it got in there...they said they are gonna put 2 drain holes in it from preventing it but i will let ya know

 

gotm y car back and oh man what a difference...glad to have it back