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Q: engine lurching/misfiring while stopped at stop light/Ck eng lite coming on&off on 2009 Chevrolet Cobalt

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While sitting at traffic lite eng would feel like lurching or misfiring to the point of almost stalling but so far not stalling, also the check engine lite has come on and then off a number of times
(1) Answer
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A misfire fault needs to be addressed right away. You can cause damage to the catalytic converter if you continue to drive this way. It would be best to drop in for diagnostics and repair as soon as possible, this way you may prevent a more expensive repair. If your check engine light is flashing damage may occur and it's best not to drive it at all.
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