2007 Chevy Cobalt Rough idling, RPM jumping, exhaust smell? or something like it. Help! Check Engine light is also on.


Asked by Feb 23, 2016 at 09:54 AM about the 2007 Chevrolet Cobalt

Question type: Maintenance & Repair

I bought my chevy used.  The day I got it home the check engine light came
on and it started doing some rough idling, what I call "jumping" or jerking a
little.  It does it off and on.

2 Answers


Check for codes. The computer often knows what's wrong and just needs to be asked.


Thank you. I took it to a mechanic and he put new spark plugs, coil and replaced a fuel injector and the car is purring like a kitten now!

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