A/C Issues, Need Help Diagnosing - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 07-21-2013, 07:13 AM Thread Starter
Join Date: Nov 2012
Posts: 19
A/C Issues, Need Help Diagnosing

so about this time last year i topped of my fiance's cobalt with freon only(no oil, when i used to be an autoparts slinger i was always told never add oil to the a/c system unless you are doing a complete drain), it had a slight leak from what i can tell, the coldness of the a/c was very weak. so fast forward to last week now, she had said the a/c was weak again. i got my can of freon and my gauge and had her crank the a/c to max. the gauge was coming up low, i filled it until it was in the acceptable range and voila the a/c is pumping out ice cold air again. Pumped out the ice cold air until Friday. I hit the a/c button and the compressor is not kicking on. The blower motor still blows strong and works on all settings so its not a blower motor issue.

I checked the a/c related fuses, the fuses looked good but i replaced them just in case, still no good. I then drove the car and made it heat up to 223 degrees when the fans kick on to make sure the fans were still operating. The fans kicked on right at 223 just as it should. Next i'm going to replace the a/c clutch relay and hope that this fixes it. If that does not fix it, what else i should look at next? i know enough to be dangerous with a/c issues.

Mine - 2005 Toyota Tacoma
1996 Acura Integra GSR

Hers - 2006 Chevy Cobalt

Last edited by Coby7; 07-21-2013 at 07:27 AM.
danteisme is offline  
Sponsored Links
post #2 of 4 (permalink) Old 07-21-2013, 07:30 AM
Super Moderator
YourCobalt.com Premium Member

Coby7's Avatar
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
You might have overcharged the system.

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 4 (permalink) Old 07-21-2013, 12:47 PM Thread Starter
Join Date: Nov 2012
Posts: 19
it's not overcharged according to the gauge, i suppose the gauge could be off? i swapped relays with the fuel pump relay since they are the same to see if the relay was bad. both activated the fuel pump so the relay checks out. When i hit the a/c button in the car, it lights up as if it is turned on, not sure if that rules out a bad connection with the actual switch itself. The guy at the autoparts store said something about a low pressure switch, if it was faulty it may not realize that i filled the system. Is there a way to test that?

Mine - 2005 Toyota Tacoma
1996 Acura Integra GSR

Hers - 2006 Chevy Cobalt
danteisme is offline  
post #4 of 4 (permalink) Old 07-21-2013, 05:48 PM
Join Date: Oct 2010
Posts: 5
A/C Issues, Need Help Diagnosing

Just took my daughters' to Firestone today and it was overcharged. Cold worked intermittently and then blew warm/hot. For $22.00(with an online coupon) they checked it, drained it and put in fresh freon with dye. I would at least let someone check it out before replacing parts that may not need replacing.
joeschmo is offline  
Sponsored Links
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