Asked by Aug 11, 2017 at 01:29 PM about the 2007 Chevrolet Cobalt

Question type: Maintenance & Repair

My car only misfires when it is warm and idling . It is smooth when it is cold and
when I speed up. I have used injector cleaner and replaced the plugs,   

1 Answer


Check to see if your idling fan is working. When you sit it should be on pulling cooler air through the radiator.

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