I need to know what is wrong with my car please
my 2010 sebring limited had a gas cap light come on along with the check engine , I replaced the gas cap and they went out, the next day i changed the plugs and air filter. now it is running really rough. I check the gap and it looks good. it is progressively getting worse. i had the parts store run a quick diagnoses on it an and came back with three fuel system faults and a ETC fault.how can you tell if the etc is the problem?
thanks