colbalt confused

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Question Asked: my 2009 chevy cobalt is a 5 speed and when you start driving around 2 25 rpms it
October 27, 2013, 07:46 AM
starts bucking. i have had the check engine light come on indacating it was the mass flow air censore. chaged it twice. helped for awhile but thats it. the check engine light is now on again and really bucking but we know its not the mass air flow cens. i thought it had to do with humidity in the air because it seemed to act up when its really hot and humid out but it does it all the time now. i put sea foam in the gas thinking that would maybe do something but nothing.every time you shift and it gets at the 2 25 rpms thats when its the worst but it will continue to do it off and on at any speed.
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