Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Hello and thank you for your question,From your description it does sound like you do have an engine misfire and that would also explain the roughness. In order to be able to determine what is causing this the first thing you are going to need to do is to have the computer system scanned to see what the fault code and or codes where that would have set when the light cam on. Most auto part stores will run the scan for you at not charge. If you can get this done and post back with the results I can advise you from there to the correct repair.