Recent content by Justin-PA

still no pending or stored codes. Is it possible for a coil to be bad without throwing any codes?

update....I cleaned the MAF sensor with MAF cleaner, and the throttle with throttle cleaner. Also put in a bottle of fuel injector cleaner. After that it stumbled once then ran fine for about 2 weeks. Then one day wife took car and commented it as missing BAD. I couldn't believe it but low...

So I changed the plugs and the problem didn't go away. Still no codes being thrown. Any thoughts what to do next?

Hi folks...I am new to this board. I have a 2008 Cobalt LS, 2.2L, 5-speed manual transmission, with 170,000 miles on it (mostly highway miles by the previous original owner). About a week ago I started getting an occasional stumble while driving. At first it was just on the interstate with a...