Question about Chevrolet Cobalt
This could be a fuel filter issue, but more than likely it sounds like a broken down / clogged catalytic converter. to confirm, have an exhaust back pressure test performed. this is a specialized gauge that threads into the oxygen sensor fittings and will tell you if there is excessive restriction. if you plan on keeping this car for a while (more than a year) i recommend using a genuine GM replacement, as the cheaper ones do not last long at all. in any even, it is good idea to change the fuel filter first. good luck!
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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