i have a 2005 chevy cobalt and emission problems?

Charles

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I replaced every component that deals with the emission and the light still on and i had the codes pulled as of P0102 and P0443 are the ones that comes up what is wrong
 
Check out obd.com. they will tell you what to check step by step.
 
P0102 it is MAF related
P00443 bad purge valve
 
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