06CobaltSSNA

Bought my cobalt ss na two weeks ago and wanted the ac to be colder so I recharged it. Shortly after doing it the compressor started making a puff sounds like pressure was being released and ran rough. Turned ac off and idle is fine now but when I go into third gear (with ac off) the car bogs shortly at around 2500-3500 rpm and resumes. Any ideas on what caused this and how to fix it?

****Also ran rough at idle and 1-2 gears but now that problem doesnt seem to be relavant anymore and only sometimes bogs in third gear but never had this problem before. And I noticed my fans coming on sooner than they should I feel.

QuickSilver_SS

Are you sure you put in the proper amount of refrigerant ? You could have over filled the system. And cause damage to the ac compressor. Too high of pressure and refrigerant will ruin your ac compressor. I don't know if it will cause your car to run rough. Or If that is another problem altogether seperate. But I would have your ac checked by a mechanic. Or you could be replacing the compressor soon unfourtanitly.

BlackielawlessSS

iTrader: (1)

please tell me you have the proper gauges and know how to properly read them.... If not kiss that compressor

QuickSilver_SS

I'm willing to bet he over filler it and has ruined the compressor. It doesn't take much extra refrigerant and/or excess High side pressure to log our ac compressors. I would say based on the sounds he is saying it is making. It is over filled.

Mr Mall Cop

iTrader: (1)

It's not to often that the do it yourself kits work to recharge the A/.C

QuickSilver_SS

That is incorrect. They work just fine. As long as you do not exceed the recommended high side pressure. By using the proper gauges and monitoring both the high and low side pressures. They can work just fine. It is people who just blindly dump too much refrigerant in. Destroy there ac system. And then blame it on the dyi kit.

MaxDugas

iTrader: (1)

Filled mine yesterday and it went fine. Just need to follow instructions lol, mine was completely empty and it took only 1 can and about 1/8 of a second can to fill it to 38 PSI.

Mr Mall Cop

iTrader: (1)

Hope it works for a long time for you

QuickSilver_SS

Exactly my point. As long as a person understands how to use the kits properly. It will be just fine.

QuickSilver_SS

As long as he filled it with the proper refrigerant. It will work properly and last until something else in the system goes bad. One of the leading causes of ac leaking fluid and dying charges is either breaks and or tears in a seal. Or the improper refrigerant. In some cases the refrigerant molecules are too small and leak slowly if the proper refrigerant isn't used.

RyBread761

iTrader: (2)

Yeah, he overfilled it.

SOURCE: I overfilled mine a month ago...

Spawne32

iTrader: (1)

Well theres the reason why they dont work highlighted right here. You NEVER fill on the high side, you always fill on the low side, the recharge cans will only read low side pressure not high side pressure.

QuickSilver_SS

Agreed. Thus why I never said to fill from either side. However. I always watch my high side pressure both during and after a fill. Its not hard to look up a manufactures specs for the recommended pressure for both high and low side. I have saw people over fill there systems and cause too much pressure on the compressor. Thus seeing a high side pressure of over 300+ psi. Causing the compressor to disengage its clutch and not spin it at all. After relieving the excess pressure the system may work as long as the compressor wasn't damaged. The kit I purchased from eBay has more then one gauge. One for low side. Which is always refered to as the service port. As well as one to monitor the high pressure side.

Spawne32

iTrader: (1)

I know, ive been doin AC for years now on car's. Manifold gauges are essential to diagnosing any AC problem as well as repairing them.

QuickSilver_SS

I agree. Its definitely essential to watch high side pressure as well.

06CobaltSSNA

I appreciate all of your answer with the ac problem which I do know I over filled. But I dont care so much about the ac at this point my issue is now I have a misfire sometimes at low acceleration and have no check engine light. Car ran perfect until I attempted to charge ac and has been running a little off. Any ideas?

Celestial739

If it happens when AC is off its totally unrelated, have you checked your plugs? Or could be a glitchy sensor ie. TPS dropping out at part throttle, I'm surprised you don't have a CEL if it's bogging/misfiring

06CobaltSSNA

How would you check tps? I'm going to change plugs tomorrow and want to clean tps sensor