07' 2.2 Throwing Codes for Purge Evap? - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

Closed Thread
 
LinkBack Thread Tools Display Modes
post #1 of 17 (permalink) Old 04-21-2013, 03:17 PM Thread Starter
Initiate
 
Join Date: Mar 2012
Posts: 45
07' 2.2 Throwing Codes for Purge Evap?

I cold started my car and it stuttered in reverse and rpms dropped but
then it smoothed out and not sure if that was caused by the oil pressure
being low or the evap purge code. I'm not sure what code it was but I went
to autozone to get it read and the guy told me to tighten my gas cap. I did and
reset the codes and then It came back. But usually its after it sits for a while and
I start it the code will come back. I accidently put higher octane gas in it but not sure if
that has any thing to do with it. Also the purge valve is a little loud but I thought it was normal.
Why am I getting these codes?
dtcart1992 is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 04-21-2013, 03:24 PM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
What kind of mileage?
Do you ever use ethanol?
Did you change the purge valve?
Bad purge valve can make your car harder to start and may sputter when it does.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #3 of 17 (permalink) Old 04-21-2013, 05:51 PM Thread Starter
Initiate
 
Join Date: Mar 2012
Posts: 45
95XXX miles
never use ethanol
Did not change purge yet because I was told it was gas cap.....
never really had a hard time starting it ever....
It starts fine but wants to bogged down after
releasing the clutch after cold starting it and driving it immediatly
that is the only time the code has come on, once my engine
is warm and I shut it off it wont do it again
dtcart1992 is offline  
 
post #4 of 17 (permalink) Old 04-21-2013, 06:35 PM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
At what mileage did you change the spark plugs?

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #5 of 17 (permalink) Old 04-21-2013, 06:45 PM Thread Starter
Initiate
 
Join Date: Mar 2012
Posts: 45
funny you ask, I just did them Like 200 miles ago.
dtcart1992 is offline  
post #6 of 17 (permalink) Old 04-23-2013, 12:09 AM
Newcomer
 
Join Date: Apr 2013
Posts: 34
Easiest way to test the purge valve is take it off and put it to your mouth and try to blow air through it, if you can its cooked if you can't use a 9v battery with gator clips once you get power to it give it a good blow with your mouth air will go through. If you don't hear a click then it's not opening again cooked. But if it clicks just tap it some times charcoal from the canister finds it way there light taps on a hard surface will clear it out then give it a couple blows with valve blow in the direction that the vapor enters intake. Like what my boss always says nothing a blow job can't fix lmao
PitbullMean is offline  
post #7 of 17 (permalink) Old 04-23-2013, 11:19 AM
Cobalt Specialist


 
Join Date: Jun 2011
Location: Charlotte, NC
Posts: 1,145
Did you check your charcoal tank? Its used in the EVAP system and feeds the fumes from your gas tank to your intake manifold. Ever overfill your gas tank on a hot sunny day? That can be a huge cause of the purge valve. The purge valve is located between the charcoal tank (above the fuel tank) and the intake manifold and its considered an EPA regulation, also to enhance your MPG/emissions.

Other sources:
-E85
-Ethanol
-Methanol
-Fuel Additives (such as octane boosters)

2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille

Last edited by 5t3alth; 04-23-2013 at 11:22 AM.
5t3alth is offline  
post #8 of 17 (permalink) Old 04-23-2013, 12:04 PM
Newcomer
 
Join Date: Apr 2013
Posts: 34
Quote:
Originally Posted by 5t3alth View Post
Did you check your charcoal tank? Its used in the EVAP system and feeds the fumes from your gas tank to your intake manifold. Ever overfill your gas tank on a hot sunny day? That can be a huge cause of the purge valve. The purge valve is located between the charcoal tank (above the fuel tank) and the intake manifold and its considered an EPA regulation, also to enhance your MPG/emissions.

Other sources:
-E85
-Ethanol
-Methanol
-Fuel Additives (such as octane boosters)
Stealth I know your trying to help but honestly bro alot of the posts this poor guy is getting is just rehashed from other users.

==========================================

DTCart. Another thing you can do is take your air compressor if you got one. and blow air through the vent pipe (the one that goes up towards the fuel cap) I did that to mine and it fixed it. come times crap like dirt or road salt can find its way in there. Give that a go and report back to me. Also if you changed your plugs make sure you got it gapped at .32 some guys say .40 but .32 is what its suppose to be. If the purge valve is louder then normal I dunno how you can hear it i cant hear mine lol. just replace it they are only 30 bucks anyway.
PitbullMean is offline  
post #9 of 17 (permalink) Old 04-23-2013, 02:59 PM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
Quote:
Originally Posted by PitbullMean View Post
Also if you changed your plugs make sure you got it gapped at .32 some guys say .40 but .32 is what its suppose to be.
Where did you get that info? 2007 Owners manual says:
Engine Specifications
Spark Plug Gap 2.2L L4 Automatic,Manual 0.040 inches (1.01 mm)

Spark Plug Gap 2.0L L4 (Supercharged) Manual 0.039 inches (1.00 mm)

Spark Plug Gap 2.4L L4 Manual, Automatic 0.040 inches (1.01 mm)

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #10 of 17 (permalink) Old 04-23-2013, 03:57 PM
Newcomer
 
Join Date: Apr 2013
Posts: 34
I got .32 never a problem coby. The only error I had was the 446 code I posted on awhile a go and your daughter had the same problem I just cleaned my evap system with 20 psi of compressed air and code went away
PitbullMean is offline  
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome